I am 51 years old, I excersize regularly and am very strong, I am 6 3 and weigh 233 lbs, I take protien and vegetable every morning for the last year using a nitribullet, and have been getting testosterone shots 400 miligrams every 3 weeks for the last year my testosterone last checked is 360, I sleep 8 hours every night, I eat good. Why do I always feel tired? Not motivated, want to take naps. Going to the gym recently feels like a chore.