Slow Rep vs Fast Rep
Slow repetitions while lifting weight is referred to as the “positive” phase of a repetition. The positive phase should take roughly four seconds. When the lift reaches its peak, pause for two seconds to maximize resistance. Subsequently do the “negative” phase and allow four seconds to lower the weight back to its starting position. Lifting slowly prolongs muscle tension and increases blood flow. Therefore, slow reps are intended to grow and build muscles.
Fast repetitions will minimize tension. However, you can still lift heavier weights with fast reps. Lifting heavier weights can bolster your overall power and strength
You will benefit from weightlifting in either a slow or fast manner. Focus on doing slow reps if your goal is to build a muscular and aesthetically pleasing physique. If you are training strictly to add strength, concentrate on lifting with fast repetitions.