On a hot summer day, heating up the house while making a meal is often the last thing you want to do.    

"When it gets warmer, often people have a natural suppression of their appetite and they don't feel as ravishly hungry and what tends to feel appetizing are cooler, colder foods," said Page Love, a dietitian.   

Page points to foods like salads and fresh fruit.    

"There is a natural craving towards some of this, so we crave the lighter things, we crave the more colorful things and we're really craving more fluid too," she said.     

Love says colorful fruits and vegetables have high nutrient and water content, but they don't always fill you up.    

"Really, the missing link there is we got a lot of bulk and water and fiber, but not a lot of density, not something that's going to stick with you," said Love. "The balance of getting a lean protein, a grain and your produce component, those three things together really are what help us feel full."