BBB — Boring But Big
Boring But Big (BBB) is the classic Wendler hypertrophy template, introduced in 5/3/1 2nd Edition (p.46).
After main work, you do 5 sets of 10 reps on the same lift (or sometimes the opposing lift), at 50% of your Training Max.
It's called "boring" because the weight is light and the reps are high — and "big" because 50 reps of supplemental volume per session adds real size if you eat for it.
Use it as a Leader phase, not an Anchor. Two cycles of BBB, then a 7th Week Protocol, then switch to something like FSL or Triumvirate as your Anchor.