Rhabdomyolysis and Spin Class

Always warm up before exercise and cool down after exercise. You know your body. Some days you may not be able to do as hard of a workout as other days due to a previous day's hard workout, stress etc.

https://uk.style.yahoo.com/rhabdomyolysis-life-threatening-condition-affecting-133354087.html

Check out Pocket Guide to Fitness on Amazon.
https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=louiza+patsis