Okay finally managed to workaround Apple’s region-lock.

Here’s a brief guide on how I did it -

1) You need a US Apple account. Create one if you don’t have any - use a fake address generator for the address details. Payment - select ‘None’.

2) Login to your US account via AppStore and restart your phone, because Fitness+ servers won’t load despite being available in the Fitness App.

3) Buy US giftcards from G2A or Offgamers - got mine from the latter because I have a membership there.

4) Redeem the giftcard via AppStore and you have money in your account. Go back to Fitness+ and subscribe, it will automatically deduct the credit from your account (gift card balance).

5) You’ll need to switch back to your original account (MY) if you have an active subscription like I do, AppleOne in order to use the service.

Steps are abit troublesome now until Apple Fitness+ is officially available here. It’s costly too due to currency conversion etc, pretty sure it’s cheaper when it’s available here. But hey, you get 1 month FREE trial. Good luck and happy working out!

Yes you need to switch between MY and US in order to access because it's tied to the account's region.