The 50-day, 100-day, and 200-day moving averages are the most widely used for spotting major, long-term support and resistance levels and overall trends. In trading, the 200-day moving average is given more attention. There is a popular belief that a crypto is in a bullish trend when its 50-day moving average is higher than its 200-day moving average. When the 200-day moving average drops below the 50-day average, this is seen as a bearish sign.