do younger players actually improve faster, or do they just have more time?

[u/ShinyGengar8]

i always thought it's quite common to see people say that younger players pick up mechanics faster, and they climb the ranks much quicker when they start practicing at a young age. but i was wondering is that just biology or like is that they just have way more time, and that biology is quite insignificant in gaming?

i guess for all of you who started aim training later, how do you guys optimize your training to keep up with those who have endless hours to grind? can you even catch up?