No pain, no gain, no idea what half these terms mean.
A training phase focused on developing aerobic capacity through high-volume, low-intensity work before adding harder efforts. The boring foundation that nobody wants to do but everyone needs.
Muscles emphasized for aesthetic appearance rather than functional strength—typically chest, arms, and abs—that look impressive shirtless but contribute minimally to actual athletic performance or real-world utility.
A training session combining two disciplines back-to-back, typically cycling followed by running, to simulate race conditions. Named for how your legs feel when you dismount the bike.