Whedon's List of the Most Physically Challenging Activities*

10. Football/Basketball

9. Running

8. Field Hockey/Soccer/Lacrosse

7. Martial Arts/Boxing

6. Gymnastics

5. Swimming

4. Wrestling

3. Riding a bicycle through a freshly plowed field with two children on board.

2. Cross country skiing through a swamp without poles.

1. Climbing 3 & 1/2 hours up a mountain with a 65 pound girl on you back.

 

*Editor's disclaimer: this list is for entertainment only. Any perceived slights to your sport/activity are purely unintentional (Translation: sure, your favorite activity could be listed or ranked higher, scheesch, get a life!!).