I used to work with an old boy 25 ish years ago who knocked up small amounts, hobbled around a room all day long huffing and puffing and then went home having done more than lads 20 years younger than him, he just rolled on all day long no problem, young lads were leaving knackered, didn’t listen to the video but maybe he knocks up what he can lay in 15 minutes and then just rolls on all day long, still gets the work out and maybe more than those that think they have earned themselves a place to put each other down.