# When to buy/When to sell

It’s easier said then done, “buy low sell high”. But understanding how money flows in and out of the crypto market is crucial to timing your investments and being able to “buy low sell high”. The first step is to understanding the crypto market cycle:

<figure><img src="/files/37VbZkIFPGeoXon6J96g" alt=""><figcaption></figcaption></figure>

Above is the entire crypto market cap in the past 10 years (with a logarithmic scale). If you look closely, you may notice how every four years or so there is a *bull run*:

{% hint style="info" %}
*A bull run/bull market is a financial term that refers to a period in the market when prices are going up. A bear market is a period when prices are going down.*
{% endhint %}

<figure><img src="/files/Wycj36LK9ETFbzNVYc2U" alt=""><figcaption></figcaption></figure>

As you can see, these bull runs occur every four years (2013,2017,2021), with each being larger than the previous. When reading this chart, it is important to note the logarithmic scale, to truly understand the exponential increases between each bull run. This is what it looks like with a linear scale:

<figure><img src="/files/B6rYA13rUbEFL69mY2MG" alt=""><figcaption></figcaption></figure>

So why does money flow in and out of crypto every four years? This is due to the mechanics of bitcoin.


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