Why do I feel lazy and weak?!

Why do I feel lazy and weak?

I am a fit 19 yr old and excersice play basketball, work and even watch my weight (which is very good). But every dang day I feel heavy and sluggish and lazy, never feel like meeting people, or socializing. I just get bored with things that used to entertain me. Even masturbating isn't a 2 times per week thing for me anymore. More like once every two weeks now!

2 weeks ago
Thank You everyone for the tips, your all very helpful. Im not so sure about getting laid though..

If you're even losing interest in whacking it then maybe you are depressed. That explains the lazy and tired. If you are just lazy and tired, it may be because you aren't eating enough. You did say that you watch your weight.