5×10 Hypertrophy Volume vs 5×5 Explosive Supplemental Strength
5/3/1 Boring But Big (BBB) vs 5/3/1 First Set Last (FSL 5×5)
Both programs run Jim Wendler's 4-week 5/3/1 AMRAP wave (5+, 3+, 1+, Deload). Boring But Big follows the main work with 5×10 @ 50%–60% for muscle size, whereas First Set Last (FSL) performs 5×5 at your first work set percentage (65%, 70%, 75%) for crisp bar speed and strength.
| Feature | 5/3/1 Boring But Big (BBB) | 5/3/1 First Set Last (FSL 5×5) |
|---|---|---|
| Experience Level | Intermediate | Intermediate |
| Weekly Frequency | 4 days / week | 4 days / week |
| Cycle Length | 4 weeks | 4 weeks |
| Primary Focus | 4-day 5/3/1 strength waves + 5×10 barbell hypertrophy | 4-day 5/3/1 wave + 5×5 First Set Last supplemental strength |
| Progression Rule | Loads follow the supplied set and percentage schedule. There is no automatic increase after each session; review your reference weights before repeating the cycle. Guided starting weights remain under your control. | Loads follow the supplied set and percentage schedule. There is no automatic increase after each session; review your reference weights before repeating the cycle. Guided starting weights remain under your control. |
| Required 1RM Inputs | Squat, Bench Press, Deadlift, Overhead Press | Overhead Press, Deadlift, Bench Press, Squat |
Choose 5/3/1 Boring But Big (BBB) When…
- You are in a caloric surplus and want 50 supplemental reps (5×10) per lift to maximize hypertrophy.
- You enjoy deep muscular pumps after your heavy 5/3/1 top set.
Best For: Intermediate lifters seeking a simple, proven 4-day barbell strength and muscular size block.
Choose 5/3/1 First Set Last (FSL 5×5) When…
- You want higher bar weight and cleaner technique on 5×5 supplemental sets (65%–75% TM).
- You want less systemic soreness or are maintaining/cutting bodyweight.
Best For: Intermediate lifters who love Jim Wendler’s 5/3/1 progression and want crisp, explosive 5×5 supplemental sets rather than high-fatigue 5×10 Boring But Big sets.
Exercise Selection Comparison
Frequently Asked Questions
Which 5/3/1 template is better for pure strength: BBB or FSL?
5/3/1 First Set Last (FSL 5×5) keeps supplemental intensity higher (65%–75% vs 50%–60% in BBB), making it ideal for bar speed and strength retention.
Can I alternate 5/3/1 BBB and 5/3/1 FSL across blocks?
Yes—Wendler frequently recommends running 2 cycles of BBB (Leader) followed by 1–2 cycles of FSL (Anchor).
Related Head-to-Head Comparisons
5/3/1 Boring But Big vs 5/3/1 Building the Monolith
4-Day Balanced 5×10 Split vs 3-Day 100-Chin-Up / 200-Dip + Widowmaker Challenge
Smolov Jr. Bench + Bro Split vs 5/3/1 Boring But Big
4-Week Bench Specialization + Bodybuilding vs Balanced 4-Lift Powerbuilding