I believe that my son is almost mastered with 5x60 sets of the tripod, but still struggles on the iM. If he has to work towards mastery weight of 5 lbs, should he just start out at 2 pounds (he can't do full perfect 30 seconds with 5 pounds yet) and work his way up, all the time doing mastery sets of the PE? Or should he work towards a slightly lower mastery weight given his age and the fact that lifting 5 pounds for him would be harder than for an adult (scaling exercises down to age)?
thanks!