Strengthen and expand your hip external rotation end range with PAILs and RAILs in a supine position using a stick, PVC pipe, or dowel — the external rotation counterpart to the supine IR drill, using the same accessible, grounded setup to passively achieve hip ER end range and then train the tissue to own and extend that range through targeted isometric loading.

Lying on your back, the stick is used to passively push the hip into external rotation — the opposite end of the stick acts as a control point, allowing you to rotate it to dial the depth of ER range in or out with precision. More rotation on the opposite end of the stick drives the hip deeper into ER, increasing the load. Less rotation backs the hip out of range, making the position more accessible. This built-in fine-tuning makes the drill scalable to any level of hip ER availability and allows for small, precise adjustments without losing position or stability.

From this passively achieved end-range position, the drill moves through two distinct isometric phases: for PAILs, push the leg against the stick — attempting to rotate out of ER and back toward neutral — while the stick holds firm and prevents any actual movement. For RAILs, actively pull the knee further into external rotation, driving the hip deeper into ER range using the external rotators themselves.

PAILs (Progressive Angular Isometric Loading) contract the hip internal rotators — the muscles being stretched at ER end range — building tensile strength and tissue resilience directly through the lengthened tissue. The stick acts as an immovable anchor, ensuring the contraction is purely isometric with no actual rotation occurring. RAILs (Regressive Angular Isometric Loading) then fire the hip external rotators — the short-side, regressive tissue — actively pulling the knee further into ER and driving the hip deeper into external rotation range. As with the supine IR version, the supine position removes the postural demands of seated or quadruped variations — the body is fully supported, the pelvis is anchored by the floor, and any compensation is immediately visible, making this an ideal position for building hip ER range with full focus on the hip itself.

Expect significant effort through the inner hip and groin during PAILs as the internal rotators push hard against the stick. During RAILs, expect a deep, concentrated contraction through the outer hip, glute, and deep external rotators as the leg actively drives further into ER. The stick should remain completely still during PAILs — any movement compromises the isometric load. Both sit bones should remain grounded throughout, with no lifting or tilting of the pelvis. Over time, this drill builds genuine active hip ER range that translates to better squatting mechanics, improved rotational sport performance, and long-term hip health.