Quadriceps stretch: Stand at an arm's length away from the wall with your injured side farthest from the wall. Facing straight ahead, brace yourself by keeping one hand against the wall. With your other hand, grasp the ankle on your injured side and pull your heel toward your buttocks. Don't arch or twist your back. Keep your knees together. Hold this stretch for 15 to 30 seconds.
So if you're doing abs exercises and you feel like your hip flexors are putting in more work, refocus and dial in on the muscles you're trying to target. It might sound trite to just "think" about a muscle working as you're doing an exercise (for example, thinking about your abs contracting as you do a situp), but it might actually prevent you from mindlessly grinding out reps with poor form.
John Wolf is Onnit's Chief Fitness Officer, and an expert in unconventional training methods such as kettlebell, steel club, and suspension training. With 15-plus years of experience in the fitness industry, he has worked with rehab clients and athletes of all levels. He moves like Spider Man and can deadlift more than 500 pounds any day of the week.
Since someone has to do the job… (Side note: That’s one of the coolest things about our body. There is always a backup system. Always another set of muscles ready to take over. Even if they are not the most effective and it leads to pain and tightness.) So, who takes over for spinal stability when the abdominals aren’t fully working? The psoas of course.
Of course, you know what it feels like to have a tight muscle. But tight hips aren't just uncomfortable—they can lead to all sorts of other aches and pains, especially in the lower back. "People focus on the hips and say their hips are tight, but we don't always think about the fact that the lower back connects to our legs at the hip," Charlee Atkins, C.S.C.S., instructor at Soul Annex in New York City and creator of Le Stretch class, tells SELF. Tight hip flexors make it harder for your pelvis to rotate properly, which can cause your lower back to overcompensate, "and this can be a setup for lower-back injury," Teo Mendez, M.D., an orthopedic surgeon at NY Orthopedics who focuses on operative and non-operative management of sports-related injuries, musculoskeletal injuries, and arthritis, tells SELF.
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How to: Stand with your feet hip-distance apart. Your feet should be flat, and your legs should be straight. Step your right back behind your body, keeping your hips parallel, and stretch your right hand up overhead at the same time. Step back up to starting position. That's one rep. Repeat eight times on each side. Do three to four sets before moving on to the next move, resting for 30 seconds in between each set.
Grade II (moderate): A larger tear in your muscle that makes it difficult to move and causes a moderate amount of pain, especially when you move the affected muscle, swelling, and tenderness. You may have 5 percent to 50 percent loss of function and you may be limping. You can't go back to sporting activities until the tear is completely healed. These injuries can take anywhere from a couple weeks to a few months to heal, depending on how bad they are.