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.
Protect yourself by strengthening your feet, ankles, calves, and hips, which support your shins. Do two to three sets of 10 to 15 reps daily (but not before a run). Stand with feet hip-width apart at the edge of a towel. With the toes of your left foot, gather the towel and slowly pull it toward you.