For the past month and a half I have been working out twice a day on fridays. Around midday I do: Squats 3x8 Box Squat 1x20 Bench Press 5x5 Deadlift 5x5 About 6hrs later I go and do. Calf Thinger 3x20 weighted wide grip chins 3x10 DB Press 5x5 and then finish w/2 or 3 sets of tate presses or curls hsugh It hasn't been a problem, I only feel it on Sundays. I get 5k+ calories (1 shake after each workout, rest is whole foods). And I'll get about 10hrs of sleep tonight. Too much for my CNS or no? Like I said I only "hurt" (just slightly sore) on Sundays.