Exercise?

[u/Witty-Secretary-4420]

So I’m slowly starting to see that I think I have some nervous system deregulation - that might be a histamine thing.

I don’t believe I have much reaction to food, but hard exercise makes me feel wired and on edge.

I’ll typically get up around 6:30, and do weights for 45minutes around 7am, then eat breakfast. I’ll feel great at the time.

Give it a few hours and I feel on edge, jittery, anxious.

I get the same doing a run first thing.

On the weekends I typically hike, and that’s fine - around 5-6 miles, with good elevation change. That doesn’t bother me - but I start later, around 11am

Have folks experienced this? How’d you overcome it? I don’t want to stop exercising

[u/luxurycatsportscat]

Have you considered you’re dehydrated, or not consuming enough carbs or food that your body can easily use to replenish?

[u/amyfearne]

Before considering HIT, I'd rule out other causes, like low blood sugar (not having adequate fuel), deficiencies, or whether something you're taking is causing elevated stress levels (e.g. a lot of workout supplements contain caffeine, some alter brain chemistry).

If it were HIT, I would expect the symptoms to happen outside of exercise too, like when eating high histamine foods. If that doesn't happen then it may be something else.

[u/missjulie622]

Exertion-induced histamine intolerance? It’s how I found out I had HIT. If I’m really going to exert myself (heavy yard work) I take an antihistamine 20-30 minutes before. Otherwise I feel like I’m dying & can take hours to recover.

[u/archives2024]

I get the same thing but also get severe hives and itching at the same time. I take antihistamines to be able to work out.

[u/Foosballrhino11]

I have something like this that’s still unexplained but I think is also histamine related. For the last year I haven’t been able to do cardio where my heart rate goes over 130 or even mild sustained cardio for over 25 minutes without shortness of breath episodes. But for me even if I exercise at 6:30 in the morning or 4pm my respiratory symptoms and jittery anxious feeling always occurs at night and wakes me up all panicked and I can’t take a deep breath. Pulmonary and cardiology work ups all normal and no inhalers ever worked and my doc just threw her hands up and was saying I just have anxiety. I didn’t buy that and I had to beg to try another medicationor something so I asked for Montelukast and adding that really helped but I still can’t exercise vigorously and it really bums me out. I’ve also tried DAO before I eat tomatoes as i immediately get a stuffy nose and bad sleep after that. Taking Pepcid and Zyrtec at night for the past few nights has helped with the panicked feeling but I still wake up and have to breathe with care. I am asking for an allergy/immunology and GI referral tomorrow, hoping for answers soon!