FSL — First Set Last
First Set Last (FSL) is a supplemental pattern.
After your three main sets, you do extra sets at the weight you used for your very first main-work set (e.g., week 1 = 65% TM; week 3 = 75% TM).
- FSL 5×5 — five sets of five. Balanced, popular.
- FSL 3×5 — lower volume, easier to recover from.
FSL is a safe default anchor — low enough intensity to never drag you into the floor.