Re: 100 Burpee Challenge
It's hard to compare times as some people do a little hop to save time (look on youtube).
I remember doing it in around 7 minutes years ago. I would never do it now as it is very high impact and my knees feel it.
If I could go back in time and change one thing fitness wise it would be to not do high impact conditioning exercises like these. It was fine when I was younger but I am sure I did a lot of damage over the years. (Im still only 29)