Meditating daily has a powerful beneficial effect on your physical health, your ability to heal emotionally, and your ability to function at your best. These benefits are measurable, and scientists and doctors the world over have been researching them for decades, by having people come into medical labs and meditate. I was part of this research in the 60's and 70's, and have the scars to prove it.
Meditation benefits all levels of life simultaneously and in balance. That is, when you do a meditation practice that really fits your individual nature and your daily life. You'll have to fine-tune any practice to get this kind of fit.
Physically, the muscles relax, the organs rest, the circulation of life energy is stabilized and tuned, and the body tunes itself up for action.
In terms of the senses, all the senses come awake, alert and ready to appreciate life. The brain and nervous system review past experience, heal and let go of painful memories, and prepare to enter action in a balanced, adaptive, successful manner. This is very healing emotionally, because you take refuge in a space of your own creation, get centered, access inner safety. Just knowing you can give yourself such repose gives a feeling of inner richness.
Most people notice slight improvements in their ability to communicate and work.
Some of the research on meditation is discussed on my benefits of meditation page, which also has links to compilations of published meditation research.