To reach a new level of fitness, you need to slowly increase the load that your body is subjected to. This increase must be gradual and targeted, otherwise the body can’t adapt fast enough, restricting gains and putting you at risk of injury. You need time to replenish energy stores and repair the small tears in muscle that occur during training. Repair of these microtraumas strengthen the muscle when in recovery mode.
The program will also only serve you exercises tailored to your personal fitness level, this will challenge you accurately for a steady, but noticeable, increase in performance.