I have a few stories about this, I'll share the worst. In December 2017 I was trading short term with serious number like 1 BTC. For example I was buying monetha for 1 btc and was selling when i made 2-3 percent profit. I won 0,6 btc (which it was worth about 10k dollars) only in 20 days. Then I've tried to practice same strategy in NXT coin. After I've bought NXT for 1 btc price went down in ten minutes. I have lost 0,2 btc when I had shower. 
Then I bought 1 btc more to decrease cost (this has worked before). Then Nxt price kept going down and down and finally I've sold them for 1,45 btc. I've lost 0,55 btc (almost 10k dollars) in a couple of hours. It was the saddest experience that I have.
Then I bought 1 btc more to decrease cost (this has worked before). Then Nxt price kept going down and down and finally I've sold them for 1,45 btc. I've lost 0,55 btc (almost 10k dollars) in a couple of hours. It was the saddest experience that I have.