I'm not a fan of exercising, the most I do is going up and down the stairs of the building where I live and I do that once every full moon. Well, you get my analogy.
Surely that guy must be in his 70s and looks like he's in his 50s. His fitness techniques at first glance look great. That walking on the ice almost naked I've only seen Buddhist monks do that.
I'd love to but I'm very lazy, I'll keep an eye on the technique to improve breathing because I'm interested in improving my performance climbing stairs hehe.
I love your initiative