I'm not sure if this counts, but: While playing instruments, I: let the washer, clothesline, and dryer do the work

While singing, I: drive the car, do the dishes, scrub the floor, cut the grass, weed the garden, shovel snow, ride horseback, water-ski, etc. Though not simultaneously.

Whenever I'm waiting, I mentally: rehearse chord changes, practice scales, finger pick on my thigh (though that sometimes gets stares), review lyrics, etc, etc.

I never realized how much of this sort of thing I do, until I thought about it. Now I'm really frustrated that I'm not a better musician than I am! (just kidding!)

My biking days are over though...too many close calls.

V