Did my third MTB ride of the season today (we are roadies until it drops below 40 degrees). First two were just to get reacquainted with my MTB bike and relearn/remember techniques. But hit it much harder today. And, wow, are my knees sore tonight. Lots of log jumping, short (<2') drops and short, steep dips and climbs. Nothing hucking here in south Jersey, but lots of fun, fairly good rate of speed and definitely single-track in the woods. Don't remember this the past couple of seasons, so I guess I am just getting old. Especially the ligiments along the backsides of my knees. Have to stop now and go get a couple of aspirin. May even spring for the heating pad tonight.