No-Workout Beach Burn

Working out isn't always a day at the beach, but that doesn't mean your day at the beach can't be a workout.

You can relax at the shore and still get in your daily exercise fix just by participating in these calorie-burning (not to mention fun) beach activities:

Swimming in the ocean requires lots of energy, even if you're only splashing around -- just treading water can burn up to 200 calories an hour*.

Water polo is a fun way to pass the time with friends, and at 500-600 calories an hour, your body (especially your core) will thank you.

Beach volleyball games are a common surf-side activity, so join in for 60 minutes to scorch about 500 calories.

Frisbees fit easily into beach bags -- just throw one around for an hour and you'll burn about 190 calories.

Strolling on the sand is not only for people-watching and seashell-collecting -- an hour of it can burn up to 200 calories.

* Calorie estimates are based on a 135-lb. woman.

Vital Tip:
Before you head out for the day, remember to pack a sunscreen touch-up -- but instead of toting around an entire bottle of sun-block, keep a little bit handy in a contact lens carrying case. According to NYC organizer , it'll hold just enough to cover your face, plus the secure top will prevent spillage (talk about a neat trick).