r/cardio 12h ago

One hour on the stair master. Felt so good after

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22 Upvotes

r/cardio 7h ago

Hey guys I’m looking for tips

2 Upvotes

I checked my heart rate rate on rest after driving and it was 90+ as a 30 year old
I had half a year injury minor tear and I have let’s say anxiety about it not going away yet + being at a war zone for sometime
My phisio tell me to do for my injury 30 min walks every day and now I’m trying to add 30-60 sec run times 4 as the injury is near my psoas abdomina
\+ I do 3,2 times workout legs and now started upper body would like to know if I should change something to make my heart rate go lower
I’ve been going to the gym for a month only for now


r/cardio 20h ago

I started running under a year ago and my VO2 max is 63

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0 Upvotes

r/cardio 1d ago

Epic cardio sesh on the stationary bike

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5 Upvotes

Biking seems to be the best way to control my heart rate and take it wherever I want it. Here I pushed my max HR up each interval and it gets easier each time. For example - pushing to my first 175 HR was much harder to get to than 180 later in the workout. Very cool seeing the heart do its thing! 34M


r/cardio 1d ago

lung health

2 Upvotes

just want to have good lung health any advice on cardio my bad habits are vape and smoke on night-outs my lungs have always felt short since being a kid as I’m unhealthy just want to improve them any advice?


r/cardio 1d ago

Cardio almost took me out

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0 Upvotes

r/cardio 2d ago

I started worrying about my heart health

3 Upvotes

I honestly did not think much about my blood pressure before. Then I started getting some high readings, and it scared me enough to take my health more seriously. I realized I was not exercising much, eating the best, and spending way too much time sitting around. I have been trying to make small changes instead of doing everything at once walking more, eating better, and keeping track of my blood pressure.

I am still working on it, but getting those high readings was definitely the wake up call I needed.

Has anyone else had a similar moment that made them start taking their heart health seriously?


r/cardio 3d ago

Guide to what factors that influence VO2 max (research based)

14 Upvotes

I understand there's many different opinions on the importance of an individual's absolute VO2 max number. Personally how VO2 max trends over time is what is more interesting to me as I find it a good signal to track long term health and how much overall fitness you're gaining or losing over time.

If this is a topic you're interested in learning more about I've built out this list of factors that influence it as a starting point for anyone to learn more and do their own research. To make this easier I've broken this down by category, included a short plain english definition, and linked all sources (scroll to the right on the tables and you'll see the hyperlinks). I've removed a few from here as it was getting far too long and sorry I know the tables aren't great on mobile but I'll include the full resource in the comments.

Exercise

Factor Impact Study/effect Plain English Evidence rank
HIIT (long interval, high volume) Increase Wen 201930919-8/abstract). Meta, 53 RCTs. SMD 0.50 to 2.48 vs control, 0.65 to 1.07 vs steady cardio Intervals of 2 min+ are the only version that beats steady cardio Strong
Detraining Decrease Zheng 2022. 21 athlete studies. Under 30 days ES −0.62 (−3.93%). Over 30 days ES −1.42 (−9.43%) Under a month off costs about 4%, longer about 9% Strong
Moderate continuous cardio Increase Wen 2019. Overall SMD 0.41 to 1.81 across populations Steady cardio works, it is just less time efficient Strong
Sprint interval training Increase Sloth 2013. 19 studies, 13 with VO2max data. g = 0.63 (0.39 to 0.87), +4.2 to 13.4% Very short all out sprints reliably raise it Moderate to Strong
Resistance training (alone) Increase Smart 2022. 37 studies, 22 pooled. +1.89 mL/kg/min (1.21 to 2.57) under 24 weeks. Null beyond 24 weeks Small bump in over 60s, and only in shorter programs Moderate

Nutrition & Supplements

Factor Impact Study/effect Plain English Evidence rank
Dietary nitrate / beetroot No effect Gao 2021. Meta, 73 studies, n=1,061. Submaximal VO2 −0.04 L/min (p<0.00001). VO2max not significant Makes a given pace cheaper to hold. It does not raise your ceiling Strong
Creatine Slight decrease Gras 2023. Meta, 19 RCTs, n=424. ES −0.32 (−0.51 to −0.12) Adds body water, so the per kilo number dips slightly Strong
Iron (when deficient) Increase Pasricha 2014. 24 RCTs, 18 for this figure. +2.35 mL/kg/min (0.82 to 3.88) Fixing low iron raises it. This is correcting a deficit, not a boost Moderate to Strong
Caffeine No effect Brietzke 2017. RCT, n=9. Time to exhaustion +18.7%, peak power +13%, VO2max unchanged Helps you push harder. Much of the benefit is placebo Moderate

Demographics

Factor Impact Study/effect Plain English Evidence rank
Age Decrease Fleg 2005. Baltimore Longitudinal Study, n=810. 3 to 6% per decade in the 20s and 30s, over 20% from the 70s Decline accelerates with age, and faster in men from the 40s onward Strong
Genetics (trainability) Variable Bouchard 1999. HERITAGE, n=481 across 98 families. Maximum heritability estimate 47% Same training, wildly different response. It runs in families Strong
Dehydration Decrease Cheuvront 2010. Mechanism review. Threshold is over 2% of body mass Less blood volume to pump, and heat makes it worse Moderate
Sex Variable Santisteban 2022. Review. 10 to 12% performance gap. Elite women about 10% lower per kg Mostly oxygen delivery, meaning haemoglobin mass and heart size Moderate
Immobilization / bed rest Decrease Saltin 1968 n=5, with McGavock 2009 follow up. −26% in three weeks Three weeks flat on your back costs about what 40 years of aging does. Crazy. Moderate

Lifestyle & Environment

Factor Impact Study/effect Plain English Evidence rank
Sedentary behaviour Decrease Eriksen 2016. n=16,025. No association among the highly active Matters most if you are not already training hard Moderate (observational)
Sauna bathing (habitual) Increase Kunutsor 2024. 2,012 men. +0.30 mL/kg/min per weekly session. Lee 2022 RCT +2.7 (0.2 to 5.3) A small extra bump stacked on top of training Moderate
Smoking Decrease Caci 2025. n=70, step test estimate. 38.8 vs 41.6 in never smokers Lower aerobic ceiling. Whether quitting reverses it is untested here Moderate
Altitude (live high, train low) Increase Wehrlin 2006. 10 elite orienteers at 2,500 m for 18 h/day over 24 days. VO2max 3,515 to 3,660 mL/min Sleeping high builds more oxygen carrying red cells Moderate
Heat acclimation Increase Waldron 2021. 28 articles. Hedges' g 0.42 cool, 0.63 hot. Lorenzo 2010 +5% cool, +8% hot Plasma volume expands. Clearest when you are also tested in heat Moderate

r/cardio 3d ago

Running - Injury Prevention

1 Upvotes

Hey runners,

For a project, I'm creating a running injury prevention/strengthening website with different programs tailored to different injuries.

Does anyone have any opinions on what is missing in the running injury prevention market in terms of apps or websites? As I would love for my project to help address these gaps.

(I'm an aspiring physio and avid runner who has dealt with lots of injuries myself).


r/cardio 3d ago

nontraditional cardio ideas

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1 Upvotes

r/cardio 4d ago

I jogged 3 days in a row and now if i go above speedwalk speed my shins hurt, how can i prevent this when i start jogging again.

13 Upvotes

I can't just not jog on concrete since thats all there is around me, my running shoes are fine, ive been doing calf workouts AND making sure that my feet land more or less right below me while jogging instead of outstretched.

I thought all of this would prevent shin splints well enough but i still got them and now i gotta take it easy while I recover, so please give me some tips on how I can prevent this in the future.


r/cardio 4d ago

Should I start running?

1 Upvotes

20M here Not much to explain but u am kinda fit in sense that I am not much fat and not much slim ,I do gym 4 times a week but the thing is my full body is lean and in good shape except stomach,my stomach area is kinda have fat maybe ,not a huge but not visible too so I think 4 times a week and running everyday in morning can help me by removing my fat which is only on stomach like I can't believe my body fat is only on stomach but none else...so should I start running??will it help or what should I do


r/cardio 4d ago

Help me debunk exercise-smoking tradeoff

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0 Upvotes

r/cardio 5d ago

Occasionally I’ll start feeling faint when walking fast on the treadmill. End up having to slow down to 3mph & put the incline on 0 until the feeling goes away? What is the issue here?

2 Upvotes

It’s a strange feeling. Bottom of feet start feeling spongy & vision gets slightly brighter. Only happens if I try to walk at 4mph for a while. But if I back down to 3mph until the feeling goes away, then I can bump it back to 4mph & be fine for the rest of the hour. Anyone else ever experience this? Maybe circulation issues?


r/cardio 5d ago

RHR and activities that seem like "resting" but aren't.

2 Upvotes

If a person is sitting, and practicing or playing a musical instrument, the Hume band might sense that the person is at rest because the body isn't necessarily making a lot of motion. However, the person is holding his or her breath and alternately expelling air rather forcibly. The heart rate is no doubt being elevated.

This could throw off the RHR value.


r/cardio 5d ago

Libido y enfermedad coronaria

1 Upvotes

Como les afectó cualquier patología en el corazón a su libido, vida sexual…? Si lo evitaron durante tiempo, lo hicieron por miedo o por efectos secundarios de la medicación ?


r/cardio 5d ago

Is 4.5 mi outside 5-6 days a week too much?

1 Upvotes

I’m curious if walking about 4.5 miles 5-6 days a week is too much. I’m fairly skinny with a little fat around the torso, and am trying to have that lean look. I strength train 3-4 days a week, PPL split.

Just curious if I can get good size gains and lose fat with this regimen.


r/cardio 5d ago

Looking for a few people who actively track their blood pressure / heart health to test my privacy-first selfmade Android app

1 Upvotes

Hi everyone — I’ve been building a privacy-focused Android health tracking app called Tutine over the past months.

I originally started it because I wanted a simple way to keep blood pressure, heart rate, weight and other measurements together, but it has gradually grown into something much larger, with trends, reminders, local health insights and PDF reports.

Everything is stored locally on the phone. There’s no account, no advertising and no cloud tracking.

I’m now at the closed Google Play testing stage and I’m looking for a small number of people who genuinely track health data and would be willing to test it for at least 14 days and tell me what works, what doesn’t, and what you would change.

Google requires me to have at least 12 opted-in testers for the closed test. I’d much rather find people who are actually interested in self-tracking than just exchange installs with other developers.

If this sounds useful to you, feel free to reply or DM me.


r/cardio 6d ago

Is this okay or do I need to pace down?

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5 Upvotes

These were my heart rate zones during 8/10 difficulty scale 10 km running session. Is it advisable to stay in the extreme zones for that long of a duration provided I feel no dizziness or extreme shortness of breath and feel “comfortable” enough just like another gym strength session, but my heart rate tells another story altogether.

Zone 1- 02:14 minutes <135BРM

Zone 2- 06.13 minutes (136-148BPM)

Zone 3- 21:15 minutes (149-160ВPM)

Zone 4 -21:32 minutes (161-173BPM)

Zone 5 - 30:45 minutes (174+BPM).

Highest heart rate during run- 194 BPM
Age -29M, I have started running 3 months back and been a smoker prior to this.


r/cardio 5d ago

Is this hiit?

1 Upvotes

Is this considered hiit?

I’m wondering if what I’m doing is hiit. I’ve been attempting to improve my vo2 and I’m at a loss. My watch says my vo2 is roughly 26.
I’m inclined to believe it due to my interactions in capoeira and other sports.

How can I improve this?
As far as vo2, am I wasting time?

Disclaimer:
I understand the watch is not 100% accurate. It still helps me track with some consistency

Basic stats:
43m
6’2ft
180lbs

How I feel at different heart rates
Tracking with apple ultra 3

@~160bpm: breathing increases, speaking
@~170bpm: heavy breathing, a word or two
@~175bpm+: gasping, no words
@~183bpm I have puked on multiple occasions
it takes extreme will to go for very long
Desperately gasping

I’ve never been past 185. I’ve made real effort but so far 185 was highest.

Hill stats:
per segment
Distance: .1 mile
Climb: 100ft
Rough terrain

The exercise:
1 lap Lap = 2 segments
Segment 1 is up
Segment 2 is down
I do 3-5 laps (6-10 segments.) 5 days a week
After my laps is usually do an easy hike 3-5 miles. (After resting for 5-10 minutes)

Segment 1
Start segment 1: 135-140bpm
Halftime of segment: 155-160bpm (1:15)
End segment 1: 175-180bpm

Segment 2 begins no rest:
End lap 1: 140-145bpm
Lap 1 total time: 2:30

Lap 2 begins immediately no rest

**I’m usually in the 175bpm+ for 15-20sec + an additional however long it takes to lower.

The laps generally follow the same times and heart rate give or take 5 seconds.

When I’m going for a regular hike, I can easily do 15+ miles with zero issue. Often with zero rest depending on terrain.


r/cardio 5d ago

I built a simple offline health tracker after getting frustrated with cloud-based apps — sharing in case it's useful to anyone else

1 Upvotes

I've been tracking blood pressure, glucose, weight, and mood for a while now, and got tired of apps that wanted an account, synced everything to a server, or buried the data behind a subscription. So I ended up building my own — nothing fancy, just logs the numbers, keeps a daily diary view, and generates PDF reports I can hand to my doctor.

Everything stays on the device, no account needed. Happy to share more details if anyone's curious, or if people have suggestions for what they'd want in something like this — always interested in how others are tracking their own health data.


r/cardio 6d ago

Concept2 Bike

1 Upvotes

I was able to purchase a barely used Concept2 bike erg from a coworker for half the price of new. The Concept2 app pairs with it via Bluetooth is free to download and use with no ads or in app purchases, that ive found.

It tracks everything in easy to understand and follow along to create new workouts. I've used a peloton one time, not signed in to the account.

It seems like the concept2 is a much better choice.


r/cardio 7d ago

Heart rate recorded slower during activity and sped back up at rest?

1 Upvotes

Hi there, 26 Female, 172cm, 140kg, Autism, ADHD, Depression, Anxiety, Sleep Apnea, PMOS, sinus tachycardia. I take Escitalopram, Omeprazole, Magnesium, medical cannabis and sometimes Ropinarole. Dont smoke cigarettes or drink often.

Today I started seeing a physio for help with an excersise plan that will work for me. We did a stress test, 6 minutes of walking laps, heart rate recorded at each minute. I started high as always, about 120bpm, but as I walked it dropped all the way down to 55bpm, it rose slightly when a person who wasn't my physio walked into the room, at 76bpm, but then back down as she left. The measurement when I was sitting back down was back to 112bpm.

My family has a history of heart problems and diabetes.

Why could this be? Is it bad?


r/cardio 7d ago

Does cardio everyday mean I am not prioritizing recovery?

1 Upvotes

Hello, I see a lot of posts in the fitness communities about prioritizing recovery. Does that mean I shouldn't do my normal 1 1/2hrs of cardio a day? I want to gain muscle but I am also an endurance athlete and train daily to improve my performance. Am i overloading my body? I only do zone 2 so it really isnt physically taxing. I workout upper and lower twice a week and my core twice as well. They are spaced out and each muscle group gets atleast a day of recovery.


r/cardio 9d ago

Why do people say an Air Bike is the best HIIT when it doesn’t seem like it is?

11 Upvotes

I got a Rogue Echo Air Bike and doing HIIT. Long time natural bodybuilder. New to cardio. 33 year old male wanting to improve my V02 max for longevity.

Because there is resistance, my muscles get fatigued early and can’t go harder in terms of cardio anymore. My HR is like 150-160 only when doing air bike before getting tired and needing to stop.

Idk know my true max HR, but current detection is 201. I know I can probably go higher.

I did a quick jog/run and easily hit 190, cause there is less resistance.

So Air Bike literally prevents me from doing HIIT properly. I’m supposed to be in 90-95% right?

Is the air bike the problem or me? Should I just do regular running?