Free weights
Learning Center
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Video: Bent-over row with dumbbell
The bent-over row targets the back of the shoulder. See how it's done.
Video: Biceps curl with barbell
The biceps curl builds strength in the upper arm. See how it's done.
Video: Biceps curl with dumbbell
The biceps curl builds strength in the upper arm. See how it's done.
Video: Calf raise with dumbbell
The calf raise targets the calf muscles in the legs. See how it's done.
Video: Chest press with dumbbell
The chest press exercise targets the chest muscles. See how it's done.
Video: Reverse fly with dumbbell
The reverse fly exercise targets the upper back. See how it's done.
Video: Squat with dumbbell
The squat is an exercise that targets the leg muscles. See how it's done.