I don't have a strong answer for you, but I can absolutely echo calisthenics. I've only just started (can't even perform a full pull-up yet, just hang for a few seconds), and I've already noticed my shoulder pain is disappearing rapidly, and my posture, both sitting and standing/walking, has improved a lot, I almost feel like I'm being pulled upright by some force, which is not only good for my body, but it actually makes me feel more confident.<p>For people sitting at a desk all day, 100% recommendation, no holds barred.<p>Returning to your question. I've tried a number of workout regimes over the years, including full-body twice a day, every day, and various splits, and for me, the one I've managed to stick to is full-body every second day, and I'm now testing out sticking cardio inbetween.<p>I do feel that doing full-body every day does just catch-up with you pretty quickly. You get overtrained and also just burn out mentally on it.<p>Personally I don't like the mental overhead of a split, and I also like to work out every part of my body due to chronis pain that the workouts really help with, so if you're anything like me, I recommend starting with doing full-body every second day, and then experimenting from that base once that has become routine. You don't want to be experimenting too much without first building yourself a base from which to launch out from in my opinion; but having said that, I only reached that conclusion through experimentation. Haha.