WOD (workout of the day)
It's part of a complete program designed to improve strength and conditioning - "constantly varied, high-intensity, functional movement". CrossFit definition by-Greg Glassman.
Cross – Training
Sometimes referred to as circuit training, refers to combining exercises from different sports fields in order to improve fitness or performance. By performing a variety of exercises from different disciplines, you are asking more of your body than with a traditional, straight-forward approach. Increased workload and variety lead to increased capability. In other words, by doing more with your body, your athletic and fitness levels have no choice but to adapt.
Suspension Training (TRX)
Suspension Training bodyweight exercise develops strength, balance, flexibility and core stability simultaneously. Engages whole body. Moreover, the functional movements mean that many muscles are worked at the same time, providing a very comprehensive, all over workout.