Not the elliptical again!!

Well since I have undertaken this challenge, I have religiously been using the elliptical machine. I bought one during Christmas and I love it. But sometimes it just can get really boring to do the same thing over and over again.
So today, I decided to accept an invitation at work to play some basketball during lunch. I work at a pretty amazing company which has its own gym, softball field, sand volleyball courts, tennis courts and basketball courts. I usually don't play basketball because I hate to get injured. I am the type of person that plays hard no matter what I do.
Well I played for about an hour and I had a great time and I really had a great sweat. I really missed playing full court basketball. At least so I thought....
...That night after work, I usually do my plyometric exercises to work on my jumping for volleyball. Wow did I feel it. My legs were so tired and my knees felt like mush. Every jump I felt vibrate through my 31 year old body. Now I remember why I love the elliptical machine. It's smooth movements during the workout really don't put any unwanted pressure on your joints. I will never stray again.