I use the time at traffic lights to do little stretching and twisting exercises in my seat. Rotating my wrists, punching, wiggling my ankles and hips. Basically

I use the time at traffic lights to do little stretching and twisting exercises in my seat. Rotating my wrists, punching, wiggling my ankles and hips. Basically the warmup exercises I need to feel healthy at 40, and a good use of dead time. I do neck and wrist twists when I'm on cruise control too.