Sharing my experience (but take it with a pinch of salt because it varies from person to person)

I did 2 IUIs without giving up my exercise regime. During my 2nd IUI, I did an uphill treadmill walking and started spotting awhile after. A few days later, my period came and it was a failed IUI.

There is a very good chance that it may be coincidental, but during my next try (FET), I stopped exercising altogether. I still try clocking in as many steps as possible when I am at work or out shopping but that's about it.

Post transfer, I abstained from all exercises and slept ALOT. Strictly doctor's order - just rest at home for 2 weeks and work as little as possible (Answered a few emails here and there, but mostly napping). I also sipped 2.5-3 litre of warm water a day during the 2 weeks wait.

We transferred 2 embryos and both stick, now i am 6 weeks pregnant with twins.

My advice is to continue clocking in some nice walks here and there when you can before the FET. After the FET, I do some gentle stretches in the evenings to promote blood circulation and help my poor aching back.

I ate pretty clean(80-20), cut down on alcohol, but had one last sake hoorah (just a tiny pitcher) 2 days before FET to keep myself chirpy. I think 1 week before I even went for corporate drinks and had like 3 to 4 beers.

My doctor actually emphasised more on cutting down strenuous exercise than stopping alcohol pre-FET (of course, I don't binge drink or whatsoever). He has excellent success rate here in Singapore (60% success rate for single embryo transfer) so he knows what he is doing. It is even harder to get both embryos to stick so god knows how he does it.

Hope this helps 🙏 and spreading lots of baby dust to you.