Does anyone swim or do water aerobics regularly?

[OSusanna]

Hi everyone. Because of a minor spinal injury (very minor and due to degeneration) I have joined the Y and started water aerobics. Eventually I’d like to get my cardio fitness back up to what it was and then try lap swimming. Right now I feel very “worked” after class 2 x a week.

All my land exercise activities left me achy. So far this doesn’t.

I’m 47 and no consistent cardio since late 2020. I’ve never restarted from so sedentary of a lifestyle before. Does anyone remember how long it takes to see measureable cardio improvement?

Also for any swimmers, have any done masters swimming? I was thinking of making that a long long range goal.

Thank you!
Oh and for land exercise I am doing t-tapp still for strength.