What’s the deal with collagen? | Is testosterone supplementation safe? | My teen is moody. How can I help him? | I have 14 lb babies and am afraid to have another one. | Pre and post workout suggestions? | And more! During Happy Hour with Heidi, Dr. Mark is teaching us about intermittent fasting - how to start, what body processes are in play, and some practical tips to be successful. SHOW NOTES
