http://www.mrsupplement.com.au - Training Phase 1 - Muscular Endurance - Welcome to phase 1 of the 5 phase training program brought to you by MrSupplement. This phase is great for beginners and those coming back from time off. This phase aims for 3 exercises per muscle group with 15 reps each set. It's also important to only have a short 30 second rest in between sets for best results. Phase 1 should last for 4-6 weeks depending on the level of training. Nick Jones - World Champion Bodybuilder.