Being dehydrated can have a negative effect on our alertness and concentration at work, the quality of our work, even our personal safety and that of others around us. It is important to prioritize hydration in order to maintain our peak mental and physical performance. The type of work we do affects our requirements for water. For example, strenuous work, especially on warm days, can lead to increased perspiration and higher water requirements. Equally, working in an air conditioned office, can speed up moisture evaporation from our skin and lungs so we end up with increased water loss and need to drink more water accordingly.