The reason lies in the power of feelings between the buyers and the sellers. In an uptrend, the buyers are in charge since they wouldn't fret following through on a significant expense. They buy high since they anticipate that prices should ascend considerably higher. Sellers are apprehensive in an uptrend, and they agree to sell just at a more significant expense. The price climbs in light of the fact that the force of the buyers' greed overwhelms the fear and uneasiness of the sellers. The uptrend begins to bomb just when buyers refuse to buy at more significant expenses anymore.