Bitcoin has no stationary value it fluctuates, holding is also a risk one should be careful about because you believe it will rise someday not bad but one needs to study the market very well before making such decision
Market research? What for? How do you go about it? Hodl's point is to just save and that's it. Never look at a chart again. Hodl and that's it.
It reminds me of when I bought antshares and forgot about them. When I looked again, the antshares had disappeared from the charts, I thought they were lost. That's the game, I thought. Finally, they had become NEOs at $4 a token. It was pretty cool, I was lucky this time. It was not always the case with several shitcoins.
When you hodl bitcoin, there's no more fear or unpleasant surprises: when you have a dip, you can buy more. If it goes up, you're happy too.