Which exercise ball to buy?

I am planning to buy an exercise ball. Checked out at stores and saw they come in different sizes - 55cm, 75cm etc.

Anybody can advise on which size I should go for? I am not that tall - 5'2".

Any other tips will also help.

Thanks.

55 cm should be fine.  :)  65 cm is generally for people on the tall side of average, and 75 cm is for the tallest of folk.

I like the brand FitBall, as well as Gymnic.  Make sure you get a pump (sometimes the ball comes with one, or you may need to get one separately) so you can properly inflate the ball.

Good luck!  :D

Thanks Pure.