4 ms·
According to the Wikipedia entry, the harm from 5BX was caused by the situp. Replace with crunches and you're good.
by jamesaguilar 13y ago
According to the Wikipedia entry, the harm from 5BX was caused by the situp. Replace with crunches and you're good.
- kinleyd 13y agoYes, that's a good catch. I think it was only late into the '80s that full sit-ups began to be deprecated. I did notice the 7-minute work out emphasizes abdominal crouches which is good. However, 5BX did also cause knee and elbow problems (thanks to the crouching jumping jacks and clap happy push-ups). I'd say watch out for routines involving jerky movements.