These high volume complexes are extremely challenging. The exercise selection is especially important. Big, compound movements that hit several muscle groups, and use explosive power are best. When put together, these compound movements create a grueling, full body workout that elevate metabolism, increase caloric expenditure and pushes your body to the limit.
An example of some of the best exercises to use:
Deadlift
Push Press
Squat (any variation)
Clean
Row (any variation)
Always remember to maintain good form throughout the set. If your form begins to break down, rest.