Medicine balls are weighted balls used for a variety of exercises to improve strength, power, and coordination. They are versatile and can be used for throwing, slamming, and core work.
"The speaker suggests throwing a medicine ball around as a dynamic warm-up activity. He mentions it after saying: "walk into the gym use the bathroom hydrate whatever it is you need to do and then five to 10 minutes of some Play Type Dynamic activity throw a medicine ball around...""