If the last two reps of a set are difficult, and your couldn't do another rep with good form, then the weight is right for you. It all depends on your personal strength level, so what others use isn't necessarily what is right for you. (I personally used anything from 10-25# for the weight workouts, depending on the exercise, and made the cardio and tabata true 'cardio' workouts by using 5-8#, again depending on the exercise).
For the size of the stability ball, there are guidelines for size on some sites that sell them. In general, when you sit on the ball, your upper leg should be angled downward from the hips to the knee somewhat.
__________________
Kathryn
^. .^
> ^ <
2010 season speed-walking 5K PR: 35:47
2011 season race-walking 5K PR: 34:42
|