Well since my beloved wife doesn't drive I need to drive her to work - not much time in the morning to get the workout done - since I have been in the gym I am right now I ahve been struggling to get the workout done - now with cardio its near impossible to cramp that all in 90 min.
So I was thinking - since you should really switch and turn your workout plan upside down every now and then - how about I work one muscle group a day (apart from traps) and use the rest of the time for my cardio?
Is there anything that speaks against working one muscle group a day? Anything I did not think of?