Remember though that while it may be important for people under stress to have a calm environment, others may enjoy the raised levels of arousal associated with the 'buzz' of a busy office. Ban smoking Open windows Use an ioniser. This helps to freshen the air by eliminating positive ions created by e.g. electric motors powering computer fans. Use dehumidifiers where humidity is a problem Introduce plants where the air is too dry. Evaporation of water from the plant pots or from the plants themselves will help to raise humidity.
Plants also raise the amount of oxygen in the air and reduce stuffiness.
Lighting Bad lighting can cause eye strain and increase fatigue, as can light that is too bright, or light that shines directly into your eyes. Fluorescent lighting can also be tiring. What you may not appreciate is that the quality of light may also be important. Artificial light, which typically comprises only a few wavelengths of light, does not seem to have the same effect on mood that sunlight has. Try experimenting with working by a window or using full spectrum bulbs in your desk lamp.