Cycling 20:00 
At the gym - the bike displayed power output for each leg and I was surprised to see how unbalanced I was - about 2/3 of the power was from my right (good) leg. So intentionally shifted to 2/3 for my left leg and it was a very good workout. My left knee has been bugging me for the past few years. It is time to finally try doing some exercises to strengthen it.