It seems every time you visit a gym there is a new type of fitness class added to the timetable.
And now is the perfect time to take advantage of a whole range of sessions that can appeal to the beginner or those looking for a new challenge.
Whisper it quietly, but boxercise has been far more popular with men since it was introduced, even though it is very similar to aerobics.
Here BBC Sport Academy runs over some of the more popular classes. Nearly all of them can be done at your local gym, leisure centre or YMCA.
Boxercise
The best way of getting fit like a boxer without ever stepping in the ring
Body pump
Use weights and aerobic exercising to tone up and get fit
Skipping
Heavyweight boxers love it because it improves speed, balance and co-ordination
Spinning
The best way of riding a bike and getting fit without having to step outside a gym
Yoga
It has been used for 5000 years in India to improve mind. body and spirit - and England cricketers love it too
Circuit training
An intense fitness program designed to get the heart working hard for short time bursts
Pilates
Another recent phenomenon designed to improve core strength and increase flexibility