I read this in The Art of Expressing the Human Body a book about Bruce Lee's training methods. Just thought I'd see what you guys think.
1. 20 full situps
Need I explain more?
2. leg raises
On back lift legs 18 in past parallel.
3. 50 standing twist
With light bar across back of shoulders, bend down and touch left with right foot, then stand, bend down touch right with left foot.
4. frog kicks
Hang from chinup bar and raise knees to touch chest.
5. 20 side bends
Standing with weight.
Lee would usually repeat sets but usually would pick three of these a day.