• Jane Fonda, 87, says her workout routine hasn't changed much over the years.
• "I essentially do everything I used to do, just slower," Fonda told People, adding that she loves walking.
• Research has shown that walking just 4,000 steps a day can lower a person's risk of dying early.

Jane Fonda may be 87, but she's still as fit as a fiddle.

In fact, her workout routine hasn't changed much over the years, the actor told People in an interview published over the weekend.

"I essentially do everything I used to do, just slower," Fonda said. "I used to be a runner, but now I love walking. I love being outdoors in the woods, especially up and down hills."

Regardless of her schedule, Fonda ensures that she gets a bit of exercise every day.

"I work out every day, so it is important to mix up the way I move. I alternate days doing upper body and lower body work for strength. I also find some way to get cardio in. Walking outside is one of my favorite ways to do so," she said.

The actor has long been passionate about fitness. In the '80s, she released a series of home workout videos, beginning with "Jane Fonda's Workout" in 1982.

Looking back at her home workout tapes, Fonda said she had "no idea" they would become so popular.

"When I was starting out, there weren't many rigorous forms of exercise available to women," Fonda said. "I learned the basic workout from a charismatic teacher named Leni Kasden in the '70s."

After the videos were released, she would receive "amazing letters from around the world" from fans about how the workouts impacted their lives, she added.

"One was from a young woman in the Peace Corps in Guatemala who did the exercises in her mud hut," Fonda said. "Another woman said she looked in the mirror as she was brushing her teeth and noticed new muscles in her arms. She wrote that it made her feel empowered, and that day she went to work and stood up to her handsy boss for the first time."

Walking can help you live longer

For those who lead sedentary lifestyles, the best thing they can do for their health is to start somewhere, Dr. Suzanne Steinbaum, a preventative cardiologist, told Business Insider previously.

"Doing something is better than doing nothing," she said. "If walking is the beginning stages of embracing a heart healthy life, then it is the initial stages that will create habits that will be sustainable and last for a lifetime."

A study published in the European Journal of Preventive Cardiology in 2023 found that walking just 4,000 steps a day can lower a person's risk of dying early.

Research shows that walking can help reduce stress and anxiety while improving heart health. Some studies also suggest that brisk walking — at about 2.7 to 3 miles an hour — can make a bigger difference in terms of health benefits.

A representative for Fonda did not immediately respond to a request for comment sent by BI outside regular hours.

• Business Insider asked experts what red flags to look out for when hiring a personal trainer.
• A good trainer shouldn't force you to push through pain or attempt to diagnose it.
• Avoid choosing a professional that lacks empathy or has an ego-driven approach to training.

Hiring a personal trainer can be a transformative step toward achieving your fitness goals, but it's crucial to choose the right professional for your needs.

Although many trainers are dedicated and knowledgeable, some may not be the best fit or, even worse, hinder your progress. Recognizing red flags early in the hiring process can save you time, money, and frustration.

That's why Business Insider asked Dr. Susie Spirlock, a doctor of physical therapy and strength-training coach at Move Your Bones, and Ashley Hiben, a certified personal trainer at Future, what red flags to look for when hiring a personal trainer.

Here's what they said.

A trainer should have practical experience in the field

Practical experience provides personal trainers with invaluable opportunities to build relationships, hone communication skills, and translate technical expertise into accessible guidance, Hiben told BI.

"Time in the field sharpens a trainer's ability to read body language, adapt communication styles, and generate energy and engagement in various environments," she said. "Trainers who gain hands-on experience, whether at a small personal-training gym or in larger groups, learn critical skills beyond the textbook."

Hiben added that some of these skills include reading body language, identifying proper alignment in individual movement patterns, and responding in real time to verbal and non-verbal feedback.

"A robust field experience cultivates the balance between technical knowledge and the ability to connect effectively with clients," she said.

"No pain, no gain" isn't a mantra any trainer should have

It's best to avoid working with someone who encourages you to push through pain while exercising, Spirlock advised.

"Pain is essentially a smoke alarm in your body being set off because there is something going on that may not be right," she told BI.

Although pain doesn't automatically mean there's damage occurring, it does mean that the trainer may need to reassess the exercises and make them more comfortable for you.

"If trainers continually ignore these signals or tell clients to push through them, they may contribute to a longer-lasting issue over time," Spirlock added.

Beware of instructors who lack communication and relationship-building skills

"In the fitness industry, trainers must excel at reading clients' needs, offering constructive feedback, and even giving a dose of tough love when needed," Hiben said. "It's not enough to deliver knowledge alone."

Hiben told BI that the most successful trainers are adaptable communicators capable of engaging each client based on their unique personality, fitness level, and goals.

Before committing to a trainer, she recommended first requesting a consultation or assessment.

"This session allows you to gauge whether the trainer's communication style aligns with your needs and whether they will push you in a way that feels supportive rather than confusing or intimidating," Hiben said.

Trainers shouldn't try to diagnose or treat pain

Spirlock told BI that diagnosing and treating pain doesn't fall under a personal trainer's scope of practice.

"This should be left to the rehab professionals like physical therapists, chiropractors, and athletic trainers," she told BI.

If you have pain that's not improving after a few sessions with modifications, Spirlock said it's the trainer's responsibility to refer you to the appropriate provider.

She told BI that a highly qualified personal trainer will already have rehab professionals within their network, so they can work together to help you alleviate pain and meet your fitness goals.

Make sure your instructor can explain why they chose a certain exercise

The point of hiring a personal trainer is to get customized workouts that fit your long-term health goals. Therefore, every movement should have a purpose behind it.

"In the world of fitness, there should always be a reason as to why we choose exercises for a client," Spirlock said.

If a trainer can't explain to you the intent of an exercise, then they may not be considering your goals or have enough experience with designing personalized workouts.

A lack of empathy or an ego-driven approach are immediate red flags

"Empathy is non-negotiable," Hiben said. "Trainers who can't sense when to support a client during tough times risk losing the trust that underpins successful coaching."

Stress, for example, impacts the body's ability to function optimally. When trainers recognize signs of stress, they should adjust their workout plans accordingly and offer encouragement instead of push clients beyond their current capacity.

Similarly, a rigid, ego-driven approach can stifle both individual and team growth.

"Trainers with an inflated sense of expertise are often resistant to feedback, limiting their own development and potentially disrupting team dynamics," Hiben said. "Given that exercise science evolves, humility and openness are invaluable traits in a trainer."

Instead, Hiben said to look for trainers who are experienced, open to feedback, and empathetic.