Hi Stepfan! If you are not excessively sore the day after a circuit workout, then feel free to do a weight training workout. But if a particular body part(s) is sore, then avoid working that particular body part(s). For example, when I did High Step Advanced the first couple of times, I really used heavy weight for the upper body portions and was sore in my entire upper body the next day. I would not have done a weight workout that next day based on the soreness I was experiencing. So you really need to listen to your body to make that judgement.
Side Note: Body Max is a fairly aggressive workout and not considered a classic circuit-like workout since the upper body work is grouped at the end as a 30 minute workout. If you do the 30 minute portion of upper body weight training at the end of Body Max with your full focus, I would consider this to be a true upper body weight workout.
Good Luck!
