These drinks are calorie free, which technically should help people lose weight and prevent sugar-related diseases like metabolic syndrome and diabetes. However, the evidence for these beverages having any use is completely nonexistent.
The classic approach to performing supersets is to work two opposing muscle groups back to back without any rest between sets. This technique is usually applied to antagonistic muscle groups such as biceps and triceps, chest and back, quads and hamstrings. An example of a superset would be one set of biceps curls immediately followed by a set of triceps pushdowns.
Pairing opposing muscle groups, such as the chest and back or the triceps and biceps, is also very common. A good example of a chest-back superset is a flat or incline bench dumbbell press followed by a rowing exercise. A triceps-biceps superset might consist of a cable press-down and a barbell curl. Research has suggested that, because a muscle tends to receive a strength boost immediately after an intense contraction of its antagonist (a muscle that performs the opposite movement), you might actually be stronger on the exercise performed second in the superset than when performing that exercise via straight sets.