It's not much of a stretch to say that nobody knows how to build power, speed, strength, and flexibility better than Jillian Michaels. This comprehensive workout, which she created for Health, trains the muscles in a way that will bust through even the most persistent plateau. | Health.com

It's not much of a stretch to say that nobody knows how to build power, speed, strength, and flexibility better than Jillian Michaels. This comprehensive workout, which she created for Health, trains the muscles in a way that will bust through even the most persistent plateau. | Health.com

Original article and pictures take https://health.com site