This `sexercise` calculator reveals how many calories you burn

London: This latest sex calculator can tell you how many calories a night of sex burns.

After asking about your and partner's gender and weight and which position you've been in and for how long, it breaks down into awe-inspiring detail how many calories you've burnt and what other exercise you'd need to do to burn the equivalent, the Daily Express reports.

The calculator is part of a service Superdrug is providing with their online doctor format - soon to be rolled out across their website for all and sundry to have a play with.

Swap the traditional post-coital cigarette for this snazzy calculator, and work out how much many calories you've burned.