A Melbourne radio host has detailed the moment she had an orgasm in front of her personal trainer while at the gym.

KIIS FM's Polly 'PJ' Harding candidly spoke about the experience during her breakfast show on Thursday morning.

Polly told her listeners and co-host Jase Hawkins that she felt the orgasm come on while using an ab-roller.

'I had to pretend nothing happened': KIIS FM radio host Polly Harding, 27, reveals she had an ORGASM while working out in front of her personal trainer

'Something happened to me yesterday that has happened to me before, but I thought it was once-off,' she said.

Polly continued: 'It happened to me at the gym and it's something that normally doesn't happen at the gym.

The 27-year-old went on to say she had to force herself to push through her ab-roller reps, despite the orgasm coming on.

'I had to do 15 reps of it. And I was about 10 in and I thought oh no, oh no here we go,' she explained.

'I didn't want to look weak and I didn't want to stop. So I kept going and then all of a sudden... I had to pretend that nothing had happened.'

Sudden: Polly told her listeners and co-host Jase Hawkins that she felt the orgasm come on while using an ab-roller

Unexpected: KIIS FM's Polly 'PJ' Harding (seen here with her trainer Pete) detailed the experience during her Melbourne breakfast show on Thursday morning

Maintaining her humour throughout the undoubtedly awkward situation, Polly joked that after the workout she thought she was going to 'come out with abs but I came out with something completely different'.

In 2014, a study showed more and more women were experiencing exercise-induced orgasms, especially when it came to engaging the abs.

An ‘exercise induced orgasm’ (EIO) or ‘coregasm’, as it is known by the leagues of gym-addicted fans on the internet, has gained both recognition amongst the fitness world and scientific backing.

Humour: Maintaining her humour throughout the undoubtedly awkward situation, Polly joked that after the workout she thought she was going to 'come out with abs but I came out with something completely different'

Get The Gloss writer Ahmed Zambarakji investigated the growing trend and discovered the most orgasm-inducing exercises.

He wrote: 'A study conducted by the University of Indiana published in the journal Sexual and Relationship Therapy suggests that the most orgasm-inducing exercises are 'climbing poles or ropes, biking/spinning and weight lifting. Anything that involves engaging your abs, basically.'

And the most effective workout? An exercise that works the abdominal muscles using a piece of gym equipment called the 'captain's chair.'

To perform the exercise you stand with your forearms resting on the padded armrests of the chair, which are positioned at right angles to the body.

You then squeeze your abdominal muscles (which support the trunk of the body) to help you lift your knees to your chest before lowering the feet to the floor again.

Of the women who came clean in the study, 45 per cent held abdominal exercises responsible, 26.5 per cent weight lifting, 20 per cent yoga, 15.8 per cent cycling and 13.2 per cent running.