# Hollow Body 45 Degrees - Canonical: https://fitwill.app/exercise/7686/hollow-body-45-degrees/ - Media ID: 7686 - Primary muscle: Abs - Body part: Core - Equipment: Body Weight - Video: https://fitwill.app/videos/7686/hollow-body-45-degrees.mp4 ## Description The Hollow Body 45 Degrees is an isometric core hold performed lying on your back, with your legs, hips, and shoulders lifted so your torso and thighs form roughly a 45-degree angle with the floor. Your arms reach straight overhead in line with your ears, and your whole body is held in a shallow, banana-like curve with the lower back pressed gently into the floor. It is the classic mid-position of gymnastics conditioning, scaled to an intermediate difficulty by holding the body at an incline rather than hovering just above the ground. This exercise trains the anterior core to resist extension under a lengthened load. The rectus abdominis works hard to keep the trunk flexed, the deep core stabilizers maintain intra-abdominal pressure, and the hip flexors and quadriceps hold the legs up against gravity. Because the arms are extended overhead, the lever length increases, which raises the demand on the abs well beyond a simple bent-knee hold. Setup matters more here than in most core exercises. If your lower back arches away from the floor, the load shifts to the lumbar spine and hip flexors and you lose most of the abdominal benefit. Before lifting, you want to feel your ribs pulled down and your lower back flat against the mat. That slightly rounded, hollow shape is the entire point of the movement, and holding it while your limbs reach away from your center is what builds the midline strength gymnasts are known for. To execute it well, lie on your back, press your lower back into the floor, then raise your straightened legs and upper back together until your body forms a shallow V at about 45 degrees. Reach your arms overhead parallel to your legs, keep your neck neutral rather than craned forward, and hold the position with steady, controlled breathing. The hold should feel like hard work through the midsection, not strain in the lower back. This hold is a staple for gymnasts, calisthenics practitioners, and anyone progressing toward movements like L-sits, handstands, levers, or strict toes-to-bar, all of which depend on a strong hollow position. It also carries over to sprinting, jumping, and bracing under a barbell, since those skills all require the torso to stay rigid while the limbs move. The most practical safety point is to earn the position gradually. If you cannot hold 45 degrees with straight legs while keeping your lower back down, bend your knees slightly, lower the angle toward 30 degrees, or bring your arms to your sides to shorten the lever. Stop the set the moment your back begins to arch or your legs start to sink; quality of the hollow shape matters far more than time on the clock. ## Instructions 1. Lie flat on your back on an exercise mat with your legs together and straight and your arms resting at your sides. 2. Press your lower back firmly into the floor and draw your ribs down toward your hips so there is no gap under your lumbar spine. 3. Exhale and brace your midsection as if preparing to take a light punch to the stomach. 4. Keeping your knees locked and ankles together, raise both legs off the floor to roughly 45 degrees while keeping your toes pointed. 5. Simultaneously lift your head, shoulders, and upper back off the floor and reach your arms straight overhead in line with your ears, palms facing up. 6. Hold the shallow V shape with your lower back still pressed into the floor and your gaze between your knees or toward your feet. 7. Breathe in a slow, steady rhythm through your nose while maintaining tension; do not hold your breath. 8. Hold for the target time, typically 10 to 30 seconds depending on your level. 9. To finish, lower your legs and upper back back to the mat together under control, then rest briefly and reset your lower back position before the next hold. ## Tips & Tricks - The most common failure is the lower back peeling off the floor as legs fatigue; the moment you feel your lumbar arch, bend the knees slightly or lower the leg angle instead of pushing through. - If your neck strains, stop leading with your chin; imagine a small ball under your chin and lift from the sternum rather than tilting the head back. - Pointing your toes and squeezing your legs together actually helps the hold, because it engages the quads and tightens the whole line of the body. - Keep your arms pressed close to your ears; letting them drift forward shortens the lever and quietly makes the exercise easier. - Shaking through the midsection halfway through a hold is normal at this angle; that tremor is the abs working near their limit, not a reason to quit early. - Film yourself from the side once in a while; the 45-degree line is hard to judge from above and most people hold lower than they think. - Progress by adding time in small increments, then by lowering the body closer to the floor toward a full hollow hold rather than jumping straight down. - Avoid walking your hips forward or tucking them up to make the angle easier; the hips should stay planted on the mat with only the shoulders and legs elevated. - Warm up with a few slow dead bugs or pelvic tilts first so your lower back learns to stay flat before the longer hold. ## Frequently Asked Questions ### Which muscles does the Hollow Body 45 Degrees work the most? The rectus abdominis and deep core stabilizers do the primary work of holding the trunk flexed, while the hip flexors and quadriceps keep the straight legs elevated. The obliques contribute to keeping the body squared and symmetrical throughout the hold. ### How is the Hollow Body 45 Degrees different from a full hollow body hold? In a full hollow hold, your lower back, hips, and legs hover just above the floor, which is considerably harder. At 45 degrees your hips stay on the ground and the V angle is shallower, making it an intermediate stepping stone toward the full version. ### Can beginners do the Hollow Body 45 Degrees? Some can, but many beginners do better with bent knees or the arms held at their sides to shorten the lever. Start there, and progress to straight legs and overhead arms once you can hold the shape with your lower back flat for 20 to 30 seconds. ### Why do my hip flexors burn more than my abs during the Hollow Body 45 Degrees? That usually means your lower back has arched and the hip flexors are pulling the load instead of your abs. Reset with your back pressed into the floor, and consider bending the knees slightly so the abdominal muscles, not the hip flexors, control the position. ### How long should I hold the Hollow Body 45 Degrees? Aim for sets of 10 to 30 seconds with crisp form, resting 30 to 60 seconds between holds. Two to four quality sets beat one long, sagging hold where the hollow shape is lost. ### Should my arms be overhead or at my sides? Overhead in line with your ears is the standard position and makes the hold meaningfully harder by lengthening the lever. If your shoulders or midsection cannot keep the shape with arms overhead, bring them to your sides as a regression. ### What can I use as a substitute if the Hollow Body 45 Degrees is too difficult? Try a bent-knee hollow hold, a dead bug, or a standard hollow rock with a shorter range. All of them teach the same flat-lower-back, braced-rib position with less lever length. ### Is it safe for my lower back? When the lumbar spine stays pressed into the mat, the hold is generally well tolerated and trains the trunk to resist extension. Discomfort usually signals that the back has arched or the angle is too aggressive, so reduce the lever or the hold time and rebuild. ### How does the Hollow Body 45 Degrees carry over to other exercises? The hollow position is the foundation for gymnastics skills like handstands, L-sits, and bar levers, and it improves midline stiffness for squats, deadlifts, and sprinting. Practicing the hold teaches you to brace and keep your ribs down while your limbs work away from your center.