Westlake Village, California
California Health & Longevity Institute www.chli.com
Located in Westlake Village, northwest of Los Angeles, this world-class wellness facility is a leader in what's known as science-based lifestyle rejuvenation. After a certified lifestyle consultant helps you create a personalized health strategy for accomplishing your goals, you'll be advised by a team of experts — physicians, licensed dieticians, exercise physiologists, fitness trainers, stress management experts, therapists and healthy-living chefs. The institute includes a complete medical clinic with a full range of diagnostic testing and medical assessments. Adding a level of high-end luxury is the adjacent Four Seasons Hotel Westlake Village, California, which has partnered with the institute to offer combined services at its 40,000-square-foot spa. For more information, check out our in-depth CHLI spa review.