Usually not too bad, if I do that run I'm usually working from home and a bit more chilled. Tired by evening and usually napping just after 8. I'm 62 but probably be napping by that time anyway lolQuestion how do u feel during the day at work? tired? or full of energy? I tried it, and boy by lunch im yawning. By 3pm im KOD. How many hours of sleep do u get in prior?