The ‘American Idol’ judge, Jennifer Lopez is famed for her curvy-yet-toned body and insiders say she’s careful with her diet as she wants to be in the best possible shape.

A source close to the mother-of-two said:

Jen drinks ice-cold water to speed up her metabolism, bans carbs after 4pm and sticks to four small meals a day, which are packed with protein.

As well as being sensible with her diet, Jennifer, 42, also works out regularly and trains with her boyfriend Casper Smart.

The source told Closer magazine:

Jen is up at 6am every morning for an hour’s exercise. She hates doing the same workout twice and likes to switch it up with core-strengthening routines, yoga or runs or the beach.

She takes a skipping rope with her when she travels and, when she gets a spare moment, will drop to the floor to do around four minutes of sit-ups. Jen likes to work out with Casper as they really egg each other on.

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