Goo evening pal,

Bollinger bands is an indicator that measures the volatility

To be sincere this the indicator known as the boiling band, is an awesome, famous and effective indicator which help technical analysing the Crypto market effectively.

If there's a price increase or decrease, the upper and lower bands widens. And if the price neither increases or decreases, the upper and lower bands become narrow thus indicating that the price is moving in a range.

To be sincere, although it's not the first time I have heard of this indicator but the way you explain it made me understand better.

Thank you very much for sharing

wishing you success