Shaun T's INSANITY MAX:30 is the craziest 30 minutes of your day. No equipment needed, just the will to dig a little deeper and go one minute longer each day, for the best results of your life.
Your muscles will beg for mercy as your strength training starts with Tabata-style "20 seconds on, 10 seconds off" power moves. Your muscles will beg for mercy as your strength training starts with ...