No pain, no gain, no idea what half these terms mean.
A workout structure that alternates between intense effort and recovery periods, teaching your body that relief is always temporary and suffering is always around the corner. It's basically a metaphor for adult life but with more sweat.
Maintaining a static position under tension without changing muscle length, like planking until your core contemplates filing a grievance. It's the art of not moving while everything inside you screams to move.
Exercise where your muscles contract and burn like crazy but nothing actually moves, making you look like you're frozen in an extremely uncomfortable position. These static holds build strength without changing muscle length, so you're basically flexing as hard as possible while staying perfectly still like a sweaty statue. Wall sits and planks are prime examples of this special kind of motionless torture.
In fitness lingo, the art of targeting a single muscle group while pretending the rest of your body doesn't exist. Think bicep curls where you're completely ignoring that your back is doing half the work. This technique is beloved by bodybuilders who enjoy having conversations about their left pec versus their right pec.
An exercise targeting a single muscle group or joint, like bicep curls or leg extensions. Perfect for building Instagram muscles while neglecting functional strength.
The phenomenon where concurrent endurance and strength training can compromise gains in both modalities, because your body isn't a limitless adaptation machine. It's biology's version of 'you can't have your cake and deadlift too.'
Inflammation of the iliotibial band causing knee pain, primarily afflicting runners who've angered the running gods. Feels like someone is stabbing the outside of your knee with an ice pick.
Having the same osmotic pressure or solute concentration as another solution—typically referring to sports drinks that match your blood's chemistry so your body actually absorbs them. Medical solutions are isotonic when they won't cause your cells to shrivel or explode on contact, which is generally considered desirable. Also describes muscles with equal tension, though that meaning gets way less advertising dollars.