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.
With consistent practice, you can learn how to isolate this muscle, which can be immensely useful and healing in the long run. Yoga is also a great way to measure the current health of the psoas. There are many postures, such as tree (Vrksasana), which cannot be properly achieved if the psoas is contracted.