age creeping up? general malaise? or sloth?

ok, i don't particularly think that i'm old... yea close to 30, blah blah... but i definitely notice a difference in the amount of time it takes me to recover from any kind of activity out of the normal.. used to be a day or so to recover from a weekend trip back to the parents would suffice... now it takes almost an entire week. I seriously am draggin this week, and know its a direct result of the good times of the wedding. i cant be sure whether its a slower metabolism and therefore an increased rebuild time, or the fact that i just don't do enough to keep myself from getting run down when i do actually try to do something...

problem is, there isn't a lot of motivation from myself or anyone else to break out of the do-nothing attitude. any suggestions or comments? at this point i feel i need to be open to almost any idea...