Hot, sweaty and buzzing with endorphins.

That's how you'll feel after an F45 class.

It's the fitness cult that promises - and delivers - an ever-changing, high-intensity 45-minute workout focused on motivation, innovation and results.

Motivation - It's like having a personal trainer available seven days a week, but more affordable.

Innovation - No two workouts are the same thanks to F45 HQ Athletics Department releasing fresh routines to keep you on our toes.

Importantly, each exercise is done at your own pace and the trainers are on hand to modify exercises to suit you.

Results - So far F45 Warrnambool members have lost more than 1200kg in weight and gained close to 80kg of lean muscle.

This is why F45 is the fastest growing fitness network in history.

The F in F45 stands for "functional".

The workouts mix functional movements with high-intensity interval training in a boutique studio environment.

This combination of interval, cardiovascular and strength training has been proven to be the most effective workout method for burning fat and building lean muscle.

There are no mirrors, just high fives all around after each class.

After a quick warm-up you will make your way through a circuit of short bursts of exercise.

As the sweat trickles down your face, an F45 playlist pumps out motivating tunes.

The 45 minutes passes quickly - the constant movement and trainer coaching and encouragement means the session feels like it's over in a flash.

Exercise done for the day. Tick.

The F45 Challenge will help you achieve your goals in every way possible - whether you are looking to reach your goal weight, tone up or increase fitness.

Industry-leading nutritionists provide you with all your meal plans so you know exactly what you're eating each day and what you have to prepare for.

Beyond fitness and nutrition, the F45 regime builds mental strength and confidence which carries over into work, family and everyday life.

It's addictive; you don't want to miss a class.