It will take about 3 - 4 weeks to see any real, noticeable improvement such as a slimmer waistline or a tighter muscle group. Please consult your physician for specific recommendations and precautions. TENS Units are used primarily for pain relief. We never recommend the use of EMS muscle stimulators on the face or neck. Instead, we do recommend our facial stimulators to help reduce wrinkles and tighten facial muscles 8.
Reciprocation is when one channel is on and the other channel is off.
An example is stimulating biceps and triceps. Instead of switching pads around, you can put a set of pads on the biceps and another on the triceps. Turn the Reciprocation mode on and stimulate biceps in one cycle and then triceps in the next cycle. There is no evidence that doing EMS is equal to 4 hours in the gym. Studies have shown that EMS is effective for toning and strengthening muscles, and as a training aid with resistance training.