It is a challenge to keep the two in the same place; at the same time. Mind keeps jumping ahead of the body. Travels short and long distances. In the past and in the future. But the body can remain only in one place and that is the present. Body transitions in time, second after second. It can not be hastened. This pace can not be altered. But the mind transitions days and years. Body here means the human form and mind is thoughts.
The body does not crave to be in the past or the future. It know only the present. Hence all the needs. Needs are not past or future. Needs are only present. Now. Hunger, sleep, love....
Desires can be past, present or future. So is pain and unhappiness.
Living in the present means keeping the mind and the body in the same place. Both being together. Living in the present is freedom from desires. There is no pain or unhappiness in this moment. Pain or unhappiness is our reflection of the past.
Living in the present is stillness. Stopping the pendulum of time in the present moment. It means happiness. Freedom from pain and unhappiness.