I've found that what I can do - immediately - in the morning depends on exercise intensity: Running/swimming/cycling: anything at or around low aerobic thresho

I've found that what I can do - immediately - in the morning depends on exercise intensity: Running/swimming/cycling: anything at or around low aerobic threshold (Friel HR zones 1, 2, or 3) Strength: Endurance-focused compound primary exercises (e.g. squats, deadlifts); any form of auxiliary exercises (planks, bicep curls, etc.) Anything more than that and I need to wait at least 2-3 hours after waking up (e.g. cardio in Friel zones 4, 5a, 5b, 5c or max-strength-focused primary compound exercises.)