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.
Here are several tips to help you free your psoas: Sit on a Flat Chair. Most chairs are not designed for sitting rather they are designed for appearance and for stacking. Ergonomically designed chairs are often just band-aid efforts to release tension that is already created from poor positioning.