Devices & Air Quality

Our picks for the best fingertip pulse oximeters for home spot checks, including an FDA-cleared model, plus how to get an accurate reading and what the numbers mean.

Our picks for the best digital and mechanical peak flow meters for tracking your breathing at home, plus how to use one and what the green, yellow and red zones mean.

Our picks for the best HEPA air purifiers for bedrooms, living rooms and large spaces, plus how to match CADR to your room and avoid ozone-producing cleaners.

Breathing trainers strengthen the muscles you use to breathe. Here is what the research says about inspiratory muscle training, who it may help, how to use a trainer safely and our top picks.