Many Americans want to stay mobile as they age. Experts think a simple test can measure health.

How many times you can stand up from a chair in 30 seconds shows your lower-body strength.

More people are searching for the sit-to-stand exercise online. It's up 287% in three months.

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The CDC has a program to stop elderly accidents. It uses the 30-second chair stand test to check leg strength.

Bruno Pontes is a personal trainer. He explains what the sit-to-stand test measures and why it's a good fitness indicator.

Nick Schofield made a video to show the exercise. It's for people who want to try it at home.

Nick Schofield made a video to show the exercise. It helps people understand how to do it.

The test is good because it's like everyday movements. It's not like machine-based strength tests.

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The sit-to-stand test checks lower-body strength, endurance, balance, and mobility. It helps assess fall risk in older adults.

There are different versions of the sit-to-stand test. The 30-second chair stand test is the most common one.

The test is easy to do at home. You just need a sturdy chair.

You need a sturdy chair to do the test at home.

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Some people should not do the test without talking to a doctor first. This includes people with balance problems or recent surgery.

What's a good score on the test? It depends on your age and gender.

If you have balance problems or recent surgery, talk to a doctor before doing the test.

There are benchmarks for the test. They depend on how many stands you can do in 30 seconds.

Don't worry too much about your score. Focus on making daily movements easier.

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If you get better at standing up from a chair, it means your lower-body strength is improving.

There are exercises you can do to improve your sit-to-stand performance. They help build strength in your legs.

Squats are a good exercise.

Squats build strength in your legs and glutes. They're good for seniors because they don't stress your hips and spine.

Squats help build strength in your legs and glutes.

To do a squat, stand with your feet apart and lower your hips. Keep your back straight.

Lunges are another exercise.

Lunges help identify strength imbalances. They can affect your mobility and stability.

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To do a lunge, stand with your feet apart and step forward with one leg. Keep your front knee over your ankle.

Hold the lunge position briefly, then push back to the starting position.

Calf raises are a good exercise.

Calf raises keep your calf muscles strong. They help with everyday movements.

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To do a calf raise, stand with your feet apart and raise your heels. Lower them back down slowly.

As people age, they lose muscle mass and strength. This can make daily activities harder.

To do a lunge, stand with your feet apart and step forward with one leg.

Lower-body strength is important for independence. It helps with daily movements like climbing stairs and walking.

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Strong legs and hips help preserve mobility and lower the risk of falls.

Mobility helps people stay active and moving freely as they age.

Melissa Rudy is a health editor. She writes about health and lifestyle.