SIOUX FALLS, S.D. -

Over the holiday season, from Halloween to Thanksgiving to Christmas and New Years, the average adult will gain about seven pounds.

Chris Mello, co-owner and trainer at CPMFITness, says many times people don't lose it, which means each year you're gaining weight, it piles on top of last year's weight gain. He says the trick to keeping fit is to be mindful of what you're eating, how much you're eating, and staying active. Mello recommends drinking plenty of water throughout the day to feel full so you don't overeat. A good rule of thumb is to drink half your body weight in ounces. So a 150-pound person would drink about 75 ounces of water or more each day.

Mello says getting active now will also help with your New Year's Resolutions. Many people make it a goal to get to the gym more often or lose weight at New Years, but Mello says there's no better time than the present to get started, especially since many people will be gaining weight in the next few weeks. He says a common goal many set is to gain zero pounds over the holidays. He says it's OK to not lose weight over the holidays, but it's a good goal to not gain any either.

For more information about CPMFITness, click here.