The thing is that estrogen keeps your joints lubricated , and estrogen makes you retain water. And when you retain estroger it makes you a little bit sronger cause of the water retention so do the math stronger+diet= makes you bigger. And when you block 99% of your estrogen levels your joints arent as lubed up, it kinda makes u feel lethargyc and you could lose your sex drive. So I dont believe in takin letro as long as you REALLY need it cause you already have gyno, or feel a limp under or around your nipple. Its kinda like a back up plan, Id stick with anastrozole, and if you can get a lil proviron , i feel that it helps for me cause it keeps my muscles feeling harder and more vascular.