$BTC and $ETH are the two main leaders of the crypto market. Most altcoins follow their direction. When BTC and ETH fall to an important price level and then stop going down, that level is called support.
A strong support level means buyers are stepping in and absorbing the selling pressure. Instead of prices continuing to drop, demand becomes stronger and the price starts to move sideways or bounce upward. This shows that sellers are losing control and buyers are becoming active again.
When Bitcoin and Ethereum successfully hold their support levels, it increases confidence across the whole market. Traders and investors feel safer entering positions because the risk of a deeper crash becomes lower. As a result, capital often starts flowing into altcoins as well.
In simple terms, if BTC and ETH stay stable or start recovering from strong support, it often acts as a foundation for a broader market rebound. If they break below support, the market usually remains weak.

