Members of the Manawatu Naturist Club enjoy a swim on a hot summer day.

Manawatu people are being encouraged to strip off and be at one with nature.

The New Zealand Naturist Federation is encouraging people to take their kit off, get out of their comfort zones and join groups of naturists for Go Natural Week.

Federation national president Wendy Lowe said from January 23 to February 1, people can head to their nearest naturist venue to try it for themselves.

Lowe has been a naturist for nine years. She said naturism was a holistic approach to healthy living, improving physical and mental health, boosting confidence and freedom in a safe environment.

"There is no pressure to undress – it is most important that you relax and have a good time."

Lowe said most camps had a 'no clothes in the swimming pool rule' to encourage them to strip off and swim in confidence on the hot summer days.

"It's all perfectly normal, natural and normal - they aren't judged because everyone is in the same boat."

She said the numbers in naturist groups had dwindled over the years as children find themselves more attracted to ipads and technology rather than nature.

The youngest member in the Hawkes Bay naturist club was 10 years old.

"We don't get as many as we would like. We are trying to encourage 18 to 35 year olds."

Manawatu Naturist Club public relations officer Trish Campbell said the group had about 56 members.

The camp, situated on Lake Road, in Oroua Downs, was a popular place for the middle-aged generation wanting to give naturism a go.

"It's a great place. The people are very family orientated, and it's a safe, family friendly place."

She said naturism gave people a sense of freedom, and allowed people to push their comfort zone boundaries.

"Most of the recent people have been curious about what it's like, so they come out and try it."

People can spend their summer days swimming and relaxing, and reading books.

She said the group also holds social events, from mid-winter dinners to New Year's parties.

"It's a real fun, family environment."