My work sked allows me plenty of gym time. My personal trainer/co-worker/buddy is an lifelong juicer and advanced bodybuilder. He has me doing one body part everyday, lifting as heavy as possible and doing every set to failure. I'm on 500mg of test-e, 3 pins in, every 7 days. My body is improving but man am I sore. Not like I can't walk, but I'm going for massage tomorrow. I'm struggling with eating enough, but improving there too. Just not used to stuffing myself and feeling bloated. Still in a learning curve for sure. Next week my sked changes and I'm forced to do two parts on gym days over a 4 day split. Which brings me to a question. What is the best muscle grouping over four days?