External video — Shoulder Flexion PAIL's/RAIL's by Dr. Beau Beard.
How to do it
- Setup
- Stand or sit tall. Upper arm pinned to your side, elbow bent to 90°, light dumbbell or band in that hand. Rotate the forearm outward, away from your stomach, to your true end-range of external rotation — as far as it goes without the elbow leaving your side.
- Execution
- PAIL: from that end-range, gently drive the forearm further into rotation against the resistance, ramping the effort up over 5-10s, hold the peak, release slowly over 5s. RAIL: immediately try to resist the arm being rotated back toward your stomach, holding 5-10s without letting the elbow leave your side. That's one rep. Repeat, then switch arms.
- Common error
- Turning it into continuous reps instead of the ramp-hold-release protocol, or letting the elbow drift away from your side to fake more rotation — both defeat the isometric loading this drill exists for.
- Feel
- Building effort at your end-range during the PAIL, genuine resisting strength during the RAIL — this should feel like real, if mild, work, not a passive stretch. Keep it at mild effort only; this is prehab before pressing, never push it toward pain.
At your end-range of external rotation: PAIL — gently drive further into rotation against resistance; RAIL — resist being rotated back. Ramp to the week's target effort, hold, release slowly.
Used in
- Week 1 · Fri — Shoulders · Reconnection
- Week 1 · Sat — Chest, Shoulders & Arms — 3-day substitute · Reconnection
- Week 1 · Wed — Chest · Reconnection
- Week 2 · Fri — Shoulders · Groove
- Week 2 · Sat — Chest, Shoulders & Arms — 3-day substitute · Groove
- Week 2 · Wed — Chest · Groove
- Week 3 · Fri — Shoulders · Load
- Week 3 · Sat — Chest, Shoulders & Arms — 3-day substitute · Load
- Week 3 · Wed — Chest · Load
- Week 4 · Fri — Shoulders · Deload
- Week 4 · Sat — Chest, Shoulders & Arms — 3-day substitute · Deload
- Week 4 · Wed — Chest · Deload
- Week 5 · Fri — Shoulders · Rebuild+
- Week 5 · Sat — Chest, Shoulders & Arms — 3-day substitute · Rebuild+
- Week 5 · Wed — Chest · Rebuild+
- Week 6 · Fri — Shoulders · Push
- Week 6 · Sat — Chest, Shoulders & Arms — 3-day substitute · Push
- Week 6 · Wed — Chest · Push
- Week 7 · Fri — Shoulders · Peak
- Week 7 · Sat — Chest, Shoulders & Arms — 3-day substitute · Peak
- Week 7 · Wed — Chest · Peak
- Week 8 · Fri — Shoulders · Deload / Test
- Week 8 · Sat — Chest, Shoulders & Arms — 3-day substitute · Deload / Test
- Week 8 · Wed — Chest · Deload / Test