Aquanatal is aerobics in water for pregnant women.

Next Generation Hatfield provides a class at 9:30 am on Wednesdays. £5 for members, £7 for non members; prices include a drink.

Cannons Health Club provides a class at 12:30 pm on Wednesdays, free to club members and £5 for non members. Cannons require all participants wear a swimming hat. The classes run throughout the year.