You might be underestimating how taxing exercise is on the body and if you're doing this after work, it's natural to need recover time, not using your body, eve

You might be underestimating how taxing exercise is on the body and if you're doing this after work, it's natural to need recover time, not using your body, even if most of the work is mental. See if you can shift your workouts to the morning. You'll start the day refreshed and the workday is natural recover time. After work you will have time and energy and even take a nap if you please.