The Fear & Greed index measures how emotions influence crypto markets. It ranges from 0 to 100, with extreme fear at 0 and extreme greed at 100. Originally for stocks by CNN Money, it gauges if markets are overvalued due to greed or undervalued due to fear. In crypto, it's psychological, not technical. It doesn't reflect asset prices but market sentiment. Different indexes exist for Bitcoin and others, indicating market sentiment. Factors vary but include market momentum, volatility, and social signals.

How to Use:

- Fear (0-50): Traders sell assets, less sensitive to price drops.
- Greed (50-100): Traders overconfident, buying in large quantities.

Use opposite market sentiment for decisions. Consider using alongside asset price charts for better predictions, but always use caution and multiple indicators.