BEWARE.
The older you get - the better you used to be.
Based on this trueism, the harder you push the more likelihood you have of coming a cropper.
You are at this point Mutton and no longer Lamb.
The older you get (37+ in my case), the longer things take to mend and this is a real ****er I can tell you.
What took 2 or 6 months to sort out when you remember back now takes a year or more and I can tell you that is most distressing because you pick up injuries more frequently at 35+ and they prohibit you from continuing for a summer / season and ain't that a year wasted!
Hacked off and hurting still - Tim