4 celebrity fitness gurus over the age of 70

By now, you know that regular exercise is essential to healthy aging. However, it may be tough to make time for a daily workout and even more difficult to find motivation to get moving. If you're in need of inspiration, you may not have to look further than your television. Some celebrities prove that it's possible to look and feel your best well into your 70s and beyond.

1. Chuck Norris

Best known for his role in "Walker, Texas Ranger," Chuck Norris remains in great physical shape at the age of 74, noted the Internet Movie Database. After graduating from high school, he joined the Air Force, where his passion for martial arts began. He went on to teach the exercise to celebrities like the Osmonds and Steve McQueen. From there, he put his passion to work in several films and television shows and can now serve as an inspiration for older adults who wish to get in shape.

2. Raquel Welch

A fit, curvy body is part of actress Raquel Welch's signature, noted IMDb. At 74 years old, Welch is nearly as fit as she was when she played a role in "One Million Years B.C." in 1966. Reuters reported that the actress attributes her stellar fitness to a strict healthy lifestyle that includes yoga and a well balanced diet. She doesn't eat after 6 p.m. and stays away from things like sugar, salt and caffeine to both look and feel her best.

3. Clint Eastwood

At 84, Clint Eastwood still holds the same tough, rugged exterior he portrayed in many of his Western films, according to IMDb. Eastwood was always a fitness enthusiast and began bodybuilding while in the army, reported Men's Health. His passion for keeping fit carried over into his acting career, where he has performed many of his own stunts and publicly advised his fans to maintain a healthy lifestyle.

4. Jane Fonda

Known as the woman responsible for the aerobics craze of the 1980s, Jane Fonda created a workout book and then turned to workout videos that went on to become classics in the world of fitness, according to IMDb. Wearing leg warmers and sweat bands, the actress instructed people how to stay active in the comfort of their own home. Today, at 76 years old, she remains in great shape and encourages a healthy lifestyle for seniors.