Aromatase inhibitors belong to an even broader class of drugs known as antiâestrogens. The other subcategory of drug under the anti-estrogens category is known as selective estrogen receptor modulators (SERMs), such as Nolvadex and Clomid. AIs and SERMs make up anti-estrogens.
Improve it: The only way to strengthen a weak psoas is by bringing your knee above 90 degrees. Sit with your knees bent on a low box or bench (6 to 10 inches high) (3). Maintaining good posture and keeping your abs tight, use your hips to raise one bent knee slightly higher than your hips.
Photo Credit NOVKOV/iStock/Getty Images. Your psoas muscles are the muscles located in the front of your hip area. These muscles are responsible for helping you lift your leg and move your torso toward your thighs. If you experience a muscle cramp in the psoas area, a number of things could be to blame.Possible causes include muscle strain from overuse, not enough potassium or calcium in your blood, compression of the nerves in your hips, or not enough blood flow to the area.ossible causes include muscle strain from overuse, not enough potassium or calcium in your blood, compression of the nerves in your hips, or not enough blood flow to the area.