From Fox News:
As more Americans prioritize staying mobile and independent as they age, experts are pointing to a surprisingly simple measure of health.
The number of times a person can rise from a chair in 30 seconds can be an indicator of lower-body strength, which is closely linked to mobility, functional fitness and healthy aging. Interest in the test appears to be growing, with online searches for “sit to stand exercise” up 287% over the past three months, according to Google Trends analysis.