At 10 a.m. I did the treadmill for 40 minutes and then the last 1/2 of Firm 1 (pushups,table work,pecs/bridge,outer/inner thigh and stomach). Well later on tonight I felt like getting on the treadmill again so I got on at 5:30 for 45 minutes. Is that too much cardio in one day? I know that the treadmill will get old if I do it solely for cardio every time, so I plan to do other things for cardio also. Just wanted to know. Thanks