30 pics of Jessica Biel "Bikini" at Puerto Rico

'For me, getting enough sleep, drinking lots of water, having a healthy diet, and staying away from alcohol are musts.

'It's so boring, I know, but doing those things really helps,' she told ELLE.

The actress also maintains a healthy, balanced diet, frequenting places like Real Food Daily, which specializes in organic vegan cuisine.

Beach fit: Jessica Biel has no need to cover up as she showed off a very trim figure on the beach in Puerto Rico (Read more and See more Pictures)