Each week Rachel Grunwell tries a new sport to bring you the lowdown.

In a unique natural experiment, researchers have observed how a nation that lost an average of 5kg per head over five years contributed to a halving of the death rate.

Genes play major role in deciding whether we're a couch potato or active bunny, a new study shows.

Exercise helps you sleep better at night, and too much time sitting down will keep you awake, a new survey says.

Each week Rachel Grunwell will try out a new form of exercise to bring you the lowdown.

Diana Clement hears the inspirational stories of fellow female novice triathletes.

A big wave surfing legend helps Danielle Wright and family take on the small waves at Omaha Beach.

Each week Rachel Grunwell will try out a new form of exercise to bring you the lowdown.

I'm sure if MacGyver had had a smartphone this would have been the plot of at least one episode of the TV show. Scientists in rural Tanzania used their smartphone as an improvised microscope to diagnose schoolchildren with intestinal worm infections.

Each week Rachel Grunwell will try out a new form of exercise to bring you the lowdown.

If you're tired of wrapping your children in cotton wool, Danielle Wright has found ways to give them some rough and tumble, in a safe environment

What is it? A high-intensity 30-minute workout that builds strength and lean muscle by using weights and your body weight.

Each week Rachel Grunwell will try out a new form of exercise to bring you the lowdown.

Danielle Wright discovers the old guard of the golfing world has finally moved with the times.

Do your joints crack? Does the sound satisfy you? Knuckle cruncher Nicky Park finds out why it's happening and if it's causing any harm.

NZ ultra-marathon man Jonathan Goslin and his mate are about to run the equivalent of 6 marathons in as many days - in the Sahara.

An increasing obsession with appearance and body shape has led to a spike in the use of steroids and other performance-enhancing drugs in gymnasiums.

What is it? Guided kayak tour from Fergs Kayaks to Rangitoto Island and back (you climb the island in-between).

What is it? Yoga/Pilates using a silk swing. It's similar to New York's anti-gravity aerial yoga, dreamed up by Christopher Harrison who was one of the co-founders of Cirque du Soleil.

What is it? A group dance class inspired by modern music and movements from Bollywood and bhangra Indian dance.

Madonna's personal trainer says the star's "fit body" is the only thing that gets her through the day.

Paleo diets have gained substantial ground in the past two years as more nutritionists and health gurus turn a sceptical eye to the benefits of a grain-based diet, which many of us eat.

Being overweight, or even clinically obese, poses no barrier to fitness for most people, according to new research.

Aucklanders are the laziest people in the country when it comes to regular exercise, a survey has found.