If you spend much time at all in a swimming pool, you have noticed that extended time in the pool will produce pruny fingers. If you are really observant, you've also noticed that this affects your toes.

Why does this happen? You cannot see it but a special oil called sebum covers the outermost layer of the skin. This oil moistens - or lubricates - the skin, protects it and even makes it a bit waterproof. (This is why water runs off the hands when they are washed instead of soaking it up like a sponge.)

Staying in the water too long washes away the sebum. Water can then penetrate the outer layer of skin, causing the skin to become waterlogged.

Spring is officially here, so it's a good time to talk about shopping for swim suits for your little swimmers to wear for swim lessons. There are a few "best practices" that help in making good choices.

Buy a suit that fits.

Face it that your children will only get one season out of each suit you purchase, so don't buy anything big enough for them to "grow into". In fact, a tight fitting suit is the best choice. Anything with Lycra in it will stretch with wear - and swim suits definitely have Lycra! A good rule of thumb: You should only be able to fit two fingers in the top of the straps. Tight fitting suits also last longer because being pulled tight strengthens the Lycra from chlorine breakdown caused by pool water. Your suits will also last longer if you do not wash them in your washing machine because doing so will break down the suit much faster and waste your money.