RIPPED! Jacked is part of the Isolation phase. This phase guarantees amazing strength gains. Jacked works with eccentric and concentric principles to challenge and overload muscles by making your muscles work at different tempos. Jacked works muscles to fatigue in order to accumulate lactic acid and produce increased strength gains. Jacked isolates muscles with 2-3 exercises per muscle group and rest in between sets. Scientific testing has proven that the only way to maintain muscle while losing fat is to add resistance training. As a result, Jacked is the perfect workout for those who are looking to prevent age related weight gain and bone density loss. Jacked builds strength, builds joint mobility and builds confidence. Test your strength and get in the best shape of your life with this amazing weight workout that focuses on different exercises each week in order to keep the results coming.