For some reason, sci-fi writers have an obsession with robots that are little more than flawed, tin-can, replacement humans. Maybe that makes for a better story, but it doesn't really reflect the current state of robot technology, with its emphasis on developing practical robots that can work alongside humans.
Following your exercise session, rest your bruised knee while applying ice. After the first day of injury to your knee, you should apply ice for 10 to 15 minutes, four times per day. On the first day, you can apply ice for 15 minutes of every hour.
(The routine takes 10 to 20 minutes, depending how many sets you choose.) If you want to warm up, march in place for 3 to 5 minutes. Prevent injury: If you've previously injured your knees or if you experience knee pain during daily activity, consult your doctor or a specialist before performing these exercises.