No pain, no gain, no idea what half these terms mean.
Exhausting your muscle's stored carbohydrates, causing fatigue and performance loss. Why you bonk during marathons.
Four or more exercises performed consecutively without rest, targeting the same or different muscle groups. A superset that went to graduate school and got ambitious.
In juggling terminology, a continuous sequence of complex tricks and variations where dropped clubs are seamlessly picked up or replaced without breaking the flow—basically showing off your most impressive, uninterrupted juggling skills.