Dive in, the water's lovely! Try sea swimming this September.
Take that, Mediterranean... Sea temperatures are at their annual peak this month - with 2014 being an especially good year to take swim off British shores.
If you've got a free weekend this month, head to the coast. All this year's hot weather has raised sea temperatures to their highest since records began and with September always providing the warmest waters, this month promises to be balmier than ever.
Swimming, particularly outside in a natural environment, has been proven to rejuvenate mind and body. In his new book, Blue Mind, Wallace J Nichols looks at the scientific evidence behind the life-enhancing effects of being in or near water.
"Water meditates you," he asserts, "unleashing the uninhibited child in all of use and unlocking creativity and curiosity, the antidote to the blue screens that keep us awake, nervy and twitchy."
Nichols explores how being close to water makes us happier, calmer and also more successful in life and relationships. If you don't fancy immersing yourself, you can experience the benefits simply from watching water, where we enter a state of 'drift', almost hypnotised by the seemingly static but gently changing scene.
Want to know more? Visit the Outdoor Swimming Society
Want a good read? Try Haunts of the Black Masseur - The Swimmer as Hero.