Ais a vertical barrier erected along the unprotected sides and edges of a stairway to prevent employees from falling to lower levels.

How can a general chart for physical activity recommendations patients improve their overall health?

If a person has a bad pain in their back, specifically lower back a bit above the hip, what should they do besides going to the doctor? what remedies could they use?

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?