The Philips health band is there to make a healthy life easier. However there are some reasons to be careful about using it.

The full list of health conditions is given in the user manual. Here, however, is a summary:

Skin conditions
You should not use Philips health band if you have skin problems or wounds in the wrist area, as otherwise, these symptoms may get worse or last longer.

Listen to your body
Remember to always listen to your body first instead of just relying on the measurements of your health band. Exercising too intensely may cause health problems like feeling dizzy or faint, nausea, temporary chest pain or exhaustion.
 
Consult your doctor before you start exercising in the following situations:

• If you have heart disease, kidney disease and/or diabetes mellitus type 1 or 2.
• If you are taking medicines for high blood pressure or that influence your
  (maximum) heart rate.
• If you have a heart condition or if you are in cardiac rehab. Ask your doctor about which exercises you can do and what your target heart rate should be.

To reduce the risk of skin irritation follow these instructions:

• Clean the health band and the skin underneath regularly and after each sports session.
• Take the health band off once in a while to give your skin some rest.
• Always dry the health band when it has become wet.
• Do not wear the strap too tight.