so I learned something today, looking at past experiences: my upper body workouts are severely effected negatively by lower body work the previous day, but not vice versa... is this true?
I need to make sure I always have 1 day rest before a upperbody workout?
If your lower body work-out involves for example heavy squats, it is likely. What that means though is not that you cannot train your upperbody the next day, it just means your performance the next day is not going to be 100%. But you don't need 100% everytime you train, you just make sure that your numbers are increasing consistently. If that does not happen, you need to adjust either programming or other factors (like sleep, nutrition, etc.).
