There was no quick fix, I just swam twice a week for years until (a) my muscles became more used to the exercise and (b) I learnt to relax and enjoy it.
I've found that not kicking at all and focussing purely on the arm movements helped a lot.
In fact, I swam 2km yesterday without kicking at all.
I'm trying to kick as little as I possibly can, as in 2-beat kick. But I don't have years of practise, so if I try to swim without kicking at all, I'd just start sinking very, very soon. :)
There was no quick fix, I just swam twice a week for years until (a) my muscles became more used to the exercise and (b) I learnt to relax and enjoy it.
I've found that not kicking at all and focussing purely on the arm movements helped a lot.
In fact, I swam 2km yesterday without kicking at all.