yes, LeeD, I am doing some plyometrics to increase my first step reaction. but I also want to lose some weight and I used to believe the best approach is aerobic exercises. the problem is I can't manage to spend too much time on workouts. since I am doing plyometrics and streching, it's difficult to squeeze in any more.
I just hope HIIT can also help me lose weight, then I can totally forget about aerobics and put my time into good use.