At age 55, your "functional age" is more important than your birth year—discover the specific strength benchmarks that ...

Smooth arm jiggle after 45 with 5 chair-based moves that tone triceps and shoulders, plus tips to train 3 to 4x weekly.

Grab a sturdy chair and see if you can finish all 4 moves without resting after 55.

“For older adults, a strong core helps prevent falls, supports proper posture, and facilitates the safe performance of daily activities such as standing, walking, and climbing stairs,” said Vesagas.