I don't really have time during the day, and I though I could just train everyday a little bit. Can you train everyday and work on just one muscle group that day? For example, I always do 15 minutes of warmup, and then I could do another 15 of one muscle group. I could do that in a superset, so I can make 4 exercises in those 15 minutes. Say on monday I would do biceps, tuesday – chest, wednesday – back, Thursday – lets, Friday – triceps, and on saturday something more. On sundays it would be a good rest. What do you think.