Palpatine
Member
Age definitely has something to do with it... so does overall health and conditioning.i think it has nothin to do with age. For example last time i did 4 sprints and after that i totally shut down. Got headache nausea and overall bad feeling. I think its very effective in fat burning, and thus leads to a higher toxins burden in blood. I was 21 years old. Almost ripped but those last fat was stubborn fat which is i think most pufas most toxins stored in whole body.
I've recently started doing sprints... and I could only do 4 to start with... now I can do 6 in a session and soon I'll be able to do 8. But I only do them once a week, and sometimes once every 2 weeks. And believe me, every time I do them I'm beat afterwards... and I'm sore for days in my hamstrings.
I'm probably in better shape than most 45 yr olds... but riddled with injuries, back surgery, meniscus surgery, torn rotator cuff, etc. On top of crushing my hormones... If I sprinted a couple/few times a week, I can guarantee I'd tear a hamstring or something.
Enjoy your youth.