Cameron Diaz weight loss tips & tricks: Actress turns 43 while keeping her sensational bikini body

Cameron Diaz just turned 43 but is still rocking her sensational bikini body thanks to her exercise and diet regimen.

Diaz released her fitness and nutrition book, "The Body Book," last year and outlined the routines she's done to keep her body and mind healthy. According to the Examiner, Cameron keeps trim through Pilates workouts, yoga, weightlifting, running and a low-carb diet. As for her diet, it consists of fish, chicken, steak, shrimp, grilled vegetables, sprouts and seeds. She avoids white-floured foods such as white bread and pasta. For her breakfast, Diaz eats egg whites, sautéed tomatoes and oatmeal.

Diaz told Celebrity Health Fitness that disciplining yourself to eat better and exercise do not mean that you have to deprive yourself.

"Well-being is an equation. You don't have to have the whole cake, you can have a piece," Diaz said. "Don't deprive yourself. Have fun. Just be self-aware. If your equation is 80 percent good, 20 percent bad most of the time, then a little movement toward the center isn't going to affect you much."

Diaz' trainer Teddy Bass told Women's Health about how the former model was able to maintain her lovely figure.

Bass shared that weightlifting four days a week can help build muscle, relieve stress and increase bone density. It is better to pair weightlifting with arm-strengthening exercises as well.

As for the lower body, Bass advised not to forget to contract the buns when exercising the glutes. He added that full-body exercises such as burpees and jump squats can help target bigger muscle groups as well. Upper back exercises can also help improve posture, so incorporating this in one's exercise routine is a must. As for losing weight, nothing can beat cardio two to three times a week.

Benji Madden, the rocker husband of Diaz, greeted his wife with a touching birthday message last August.

Madden posted a picture of him and his wife in a loving embrace on Instagram and captioned it with:

"Happy Birthday to my Beautiful Wife My best friend and Everything else- there's so much I could write. I'm the luckiest guy alive- I get to spend the rest of my life right here. I love this Woman!! Many more Baby!!"

According to the Mirror, there have been rumors floating around that Diaz is pregnant with their child. The outlet reported that when the couple landed in Australia, Diaz was photographed with a bag covering her stomach. However, no confirmation has been released yet.