My friend, who back then was a teenager that had never done any drugs, that played rugby described it as going ultra instinct in real life. Said it felt like his heart was going to explode.

Nowadays we have research chemicals, you double your cardio instantly buying some dodgy shit on the internet but might get cancer later on. Combine that with a bullshit "exercise induced asthma" diagnosis so they can get the inhalers and these kids run forever.