You will work every muscle group in your body every week. STS will feature three Phases. Each phase will last either 4 weeks or 8 weeks depending on which plan you choose to follow. Though the main focus of this series is hypertrophy, each phase will focus on a different type of muscular development. Phase 1 – muscle Endurance, Phase 2 – hypertrophy, Phase 3 - strength. STS will take you through a completely planned workout series lasting either 3 months or 6 months in which your workout will vary almost every week. No matter which phase you’re in you will always work every muscle group every week. Just the intensity, volume (sets, reps, weight) and type of exercise will change.