There is a 7 minute challenge that has gone out to accumulate 7 minutes of hanging per day. Brachiation is great for shoulder health. I time myself each morning. Part of my measurement of how my bodies nervous system is ready to take on the tasks at hand. Some days I get 1 minute 15 seconds, some days only 45 seconds. Take note of head position. Don't stick your head out in a forward carriage.