Which of the following best describes a 'super set'?

A 'super set' refers to the technique of completing sets of exercises that target opposing muscle groups with little to no rest in between. This method allows for efficient use of time and helps to enhance muscular endurance and promote hypertrophy. By working opposing muscle groups, such as biceps and triceps, or chest and back, the muscles can recover while the other group is being engaged, which can maximize workout intensity and efficiency.

The concept of a super set is also beneficial for increasing heart rate and burning calories, as there are minimal rest periods. This technique is often employed in strength training programs to create a more challenging workout regimen, contributing to overall strength improvements and muscle balance.

In contrast, the other options describe different training methods or approaches that do not align with the definition of a super set. For instance, performing two different exercises with long rest does not embody the "minimal rest" principle of a super set, while targeting the same muscle group can lead to fatigue without allowing the opposing muscles to engage. Alternating between cardio and strength training represents two different modalities and does not fit the super set definition either.