With summer fast approaching, NHS Choices asked women if they were happy with their bikini body, and 86% said no.
The survey also highlighted that most women felt least confident about their stomach (66%) and thighs (25%).
To help combat fitness fatigue, and get people back on track and ready to flaunt their figures on the beach, NHS Choices is inviting the nation to Get Ready for Summer.
Anyone who wants to shape up for summer can get involved by choosing from one of four free health and fitness plans - losing weight, healthy eating, getting fit, or training to run 5k.
Each action pack will allow people to get weekly emails with tips and advice. Participants can also visit the NHS Healthy Living Facebook page where they can share their personal health goals and join groups which provide ongoing motivation and tips from health and fitness experts.
Jeanette Kwakye, 2012 Olympic runner, advises, "It takes discipline and hard work to achieve fitness goals, but getting started is the hardest part.
"Running is a great way to lose weight and get that beach body that everyone wants. The Get Ready for Summer plan is designed for anyone - I’ll be signing my mum up to the Couch to 5K plan, so she can appreciate the buzz and excitement of running for herself!"
Anna Sutton, Live Well editor for NHS Choices, said; "Another recent survey has revealed that social networks - friends, partners and even work colleagues - are the most important motivator for people trying to stick to diet and fitness plans, but their good intentions often trailed off when that support was no longer available.
"With Facebook and weekly email advice we think we are giving people the tools to succeed."
Make this summer your best yet, to sign up for your action pack, visit www.nhs.uk/summer or text SUMMER to 64746 for more information.