Ireland's ultimate ultra-fitness couples rack up followers
There are plenty of reasons why the couple who train together, stay together.
Aside from the endorphin hit, it's a chance to work out latent frustrations, and can help you achieve your fitness goals.
Joint training sessions can be a chance to bond while bench pressing.
So perhaps it's not surprising that ultra fit couples rack up thousands of followers on Instagram.
For example, Swedish gym bunnies and loved up couple Jesper Lekland and Amanda Wallander have 58,700 followers and post tandem work out routines on a daily basis.
In Ireland we have our own Instafit couples.
This week, 'Dancing with the Stars' star performer Aoibhín Garrihy spoke of how happy she was after her husband John Burke scaled Mount Everest.
The two got married last year and Aoibhín followed him to base camp before turning back.
She admits she was wary of him scaling the slopes but said: "You can't hold back the tide - if someone wants to do something you have to let them do it."
They aren't the only couple to take part in adventure-filled fitness trips.
Amanda Byram and her TV producer husband Julian Okines are both hard-core health and well-being fanatics. The couple often go on holiday to clean-eating retreats such as the Body Camp in Ibiza and other similar fitness retreats.
Byram believes "that being strong is the path to health and happiness".
Like most rugby stars, Rob Kearney has to stay in shape. His model girlfriend Jess Redden also keeps an eye on her figure and regularly posts on social media about her regime.
Last year, she told the Irish Independent she works out six times a week. "I also do boxing, pilates and yoga," she said.