He is tired either from work or from life. It depends all on his health, age, and mental/physical health history in his family. He could just be getting old. People get more tired when they get older because their bodies become weaker.
You really are tired
No, "ubiquitous" means existing or happening everywhere and all the time. It has nothing to do with being tired. "Exhausted" and "enervated" mean "very tired."
in order to avoid becoming tired quickly, you must exercise daily and drink plenty of water, and have a healthy diet
Stamina.
flexibility
construct sleeping in when you are really tired and really need sleep and you cant sleep cause your so tired
Sleep.
ur eyes r getting really tired
Being really tired
Really
Two to three times a week
Yes! When I was a teen I got really tired of being told what to eat, and now I'm 24 and STILL tired of it.