Anywhere from 15-35, 7 is way way way too low. But its all a personal thing, 44 on e level curls me into a little bitch ball, some people 105 and are still ok.
It really depends on the test to estro ratio in my opinion. I am on 150mg cyp a week my test levels are 1304 and my e2 is 17 with no AI when I run test at 375 a week with no AI my e2 is 30 with no AI yes I'm lucky like Rick Rock
I forget my last reading it was in the 20-40 range that was fine. I was at 7 ike one of 2 blood works ago ( every 6 months). I will check out htat video
I thought that low like 7 was for cutting and lean and if it was high you put more bulk on. One guy at the gym told me that estrogen is not a total enemy and you need some in you for gains. Just not tons of it. Learn something all the time.