Supported by experts such as NIH USA, Mayo Clinic, and others.

Jennifer Lopez is a name that evokes not only an iconic singer with 245 million Instagram followers but also timeless beauty. Every time you watch her videos or posts, you see a younger version of her.

So, how does J Lo look so youthful even at 56? To answer Gayle King's question about her training intensity, Lopez explained why she chose weight training over cardio.

She said, “I think I’ve gotten good at working out what I need to work out without killing myself. I think when I was younger, I was like doing all the things and like, working so hard. And now, I work smarter, not harder. You know?”

According to the Facebook clip, published on October 14, 2025, Lopez said, “That’s what my trainers and I think about a lot. It’s like, I have 40 minutes for you right now, and we need to maximize that, and we do. I lift heavy, I do a lot of weights now because as you get older, you need to start doing that in your 30s, and you need to do that because, even if you’re like, into cardio and you want to be slim or drop weight or whatever, muscle is the thing that burns fat.

And as we get older, we lose the muscle. So, we need to build the muscle to keep a youthful appearance, you know?”

Data also supports her statement. Research published in the NIH, USA, states that muscle mass begins to decline in the 30s, and the rate of loss accelerates after 60. The research also reports that women lose nearly 3 to 8 percent of their muscle mass per decade after 30.

According to Mayo Clinic, strength training is the most effective and serves as a foundation for muscle prevention.

The Mayo Clinic also suggests an ideal strength-training routine that people can follow, which includes:

• Performing 2 to 3 days of full-body resistance exercise is sufficient for muscle prevention
• A minimum effective dose is 2 times a week
• People who can manage and handle resistance training 3 times a week can see exceptional growth.

Even Caroline Idiens, the personal trainer of the platform Caroline’s Circuits and a cover star of Women's Health magazine, once said, “Building muscle is like building armor as you age. And I love that younger women are already thinking, “Why wait?”.

While her strategy of using strength training more often to achieve a healthy physique is evident, research also highlighted her weekly workout routine, which shows the level of hard work she puts in to achieve the result.

Jennifer Lopez’s weekly workout routine

Lopez is very disciplined about her workouts. She used to train 6 days a week. However, she currently trains 5 days a week, eliminating cardio on one day and adding an extra weight workout on the other days.

It is important to note that her profession is sufficient to incorporate the cardio component into her life. The weekly workout routine of Lopez includes:

Monday: Full-body

• Push-ups
• Dumbbell squats
• Medicine ball sit-ups
• Bent-over rows

Wednesday: endurance building

• Resistance band kickbacks
• Sumo squat
• Tricep extension
• Dumbbell rows
• Boxing

Thursday: bodyweight exercise

• Glute bridges
• Leg raises

Friday: legs day

• Dumbbell single-leg deadlift
• Platypus walk
• Resistance band kickbacks

Saturday: active rest

• Yoga
• Stretching

So, Lopez knows how to adjust her workout approach based on her age.

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Written by

Supradeep Dutta

Edited by

Ashvinkumar Patil