>>76592196
Putting your hearth through intense scenarios forces it to adapt and git gudder at pumping. Your heart becomes more efficient, blood vessels get bigger/stronger so you can deliver more oxygen though your body at a faster rate. Then when you rest your cardiovascular system doesn't have to work nearly as hard because it has adapted to much harsher conditions. It's like how you put a strain on your chest when you bench, so your chest grows stronger and adapts so you can move more weight with less effort as time goes on

You're going too fast. Slow it down and listen to rock music, then speed up near the end. Try to keep a consistent pace all throughout unless you have more in the tank near the end. Everyone psyches themselves out on cardio because they go way too hard in the beginning when the beginning should leave you bored and wanting to go faster. Also, run on the street because treadmill running is boring as fuck and is not real running anyways

imagine if Putin were there

The jew fears the gamer

>>509573249
>utterly pathetic
>uttarly pradesic.