You Can’t Feel Protein Working. That’s the Problem.
Recovery is noisy. Training feels hard either way. Most athletes default to whatever they were already doing — so the variable stays invisible. Subjective assessment of protein adequacy is unreliable.
So we built something you can test in 4 days.
How It Works
The 4-Day Heavy Block
A structured training + protein protocol grounded in published research. Pick your sport. Run the block. See what you feel.
Day 1
20 km steady run
RPE (1–10) + finish HR
Day 2
5 km easy
Morning HRV or wake-feel (1–10)
Day 3
10 km moderate
RPE + how legs feel at km 8
Day 4
20 km with 5 km TT inside it
Record 5 km time — this is the test
Day 1
90-min steady ride (Z2/low Z3)
RPE + avg power/HR
Day 2
30-min easy spin
Active recovery — wake-feel (1–10)
Day 3
60-min moderate ride (Z3)
RPE + legs in final 15 min
Day 4
90-min ride with 20-min FTP TT
Record power or time — this is the test
Day 1
90-min bike OR 18 km run
RPE + main metric
Day 2
30-min easy swim or spin
True recovery — wake-feel (1–10)
Day 3
60-min brick (45 bike → 15 run)
RPE + run pace off the bike
Day 4
90-min long + 20-min TT
Record TT result — this is the test
Day-0 Baseline
The day before you start, record a baseline test in your primary sport and rate your confidence (0–10): “How confident am I that protein matters for my training?” On Day 4, retest and rescore.
What You Get
Everything You Need for 4 Hard Days
Your trial pack includes 8–9 ADDRA protein bars (you pick the variety), a printed Block Card with your sport-specific 4-day protocol and protein dosing by body weight, and a Day-0 baseline self-test card for before/after comparison.
Across 4 consecutive days of heavy training, endurance-trained runners on 1.83 g/kg/day of protein hit positive whole-body protein balance and trended toward a faster 5 km time trial.
Each ADDRA bar delivers 3g leucine — 2× a typical bar. A lower protein dose with boosted leucine produces the same muscle protein synthesis response as a larger dose of standard protein.
Honest Framing
Williamson is n=10, male, endurance-trained runners. The 5 km result was a trend (P=0.06), not a statistically significant finding. We cite the study because it provides the protocol framework. We don’t promise a PR — we promise a structured trial with no financial risk.
“Run the 4-Day Heavy Block. Hit the protein target. If you don’t feel a difference by Day 4, email us and we refund you. No proof. No questions. No return shipping.”
The protocol was run-specific; the protein dose recommendation (1.83 g/kg/day) is supported across endurance modalities by the ACSM position stand (1.2–2.0 g/kg). We’ve matched the training protocols by duration and intensity for each sport. The MBG means you’re testing it at our cost, not yours.
Yes, and we say so openly. Williamson gives us the protocol framework. The MBG is our answer to limited evidence — we’re not asking you to trust us; we’re asking you to test it at our expense.
Most endurance athletes undershoot 1.83 g/kg/day. The calculator above helps you check. If you’re already there, the leucine boost still adds value: 3g per bar triggers MPS at a level that typically requires 30g of standard protein.
Life happens. The protocol is a guideline, not a prison sentence. Hit the intensity targets as closely as you can. If you don’t feel the guarantee was honored, email us for a refund.
You’re not buying a bar. You’re buying a structured 4-day trial with a specific training protocol, a protein target, a before/after test, and a guarantee. The bars are the delivery mechanism.
You choose between two variety pack options at checkout. Current flavors include Chocolate Fudge Brownie, S’mores, Apple Pie, Chocolate Cherry Almond, Chocolate Chip Cookie Dough, and Peanut Butter Cookie Crisp.
4 Days. Your Training. Our Science. Zero Risk.
Order the 4-Day Heavy Block. If you don’t feel a difference, we refund you. That’s it.
