His son got him an exercise bike, which David recommends to all. He really enjoys going for a ride everyday.
His wife didn't understand the pleasure it gives him so she asked if she could watch his 30 minute session yesterday morning.
All was OK until after 15 mins he got off and struggled to turn it around for the next push.
"Why was that?" she asked.
"Because I my age, I didn't want to go too far."