Is it a bad thing to work the same muscle group in the AM, then return in the PM and do it again. The routine I am doing is a 4 day routine that gives Wed and the weekend off (or for cardio). You will work one group then never do it again for 7 days...Sometimes I like to return to the gym and target the same group lightly again in the evenings and hit the stairmaster for 15 minutes...I have 30 lbs of belly that needs to come off so I am doing two a days to burn fat...hate to not come in and do a little lifting after the stairmaster...but do not want to compromise what I am doing in the mornings either...Opinions please..Thanks