>>Four minutes is all this finisher superset takes, but in that time you’ll squeeze maximum muscle gains from your upper body session. The Tabata format is simple: perform the first exercise continuously at maximum intensity for 20 seconds, then rest for 10 seconds. Next, perform the second exercise at maximum intensity continuously for 20 seconds and rest for another 10. Do the whole thing 4 times to complete the workout – and leave the gym feeling fully