https://globalsolochallenge.com/polyphasic-sleep/

How to switch to polyphasic mode

During your first solo races, the switch from monophasic to polyphasic sleep can be very hard. It can take up to 3-4 day of adaptation, this effectively means that for shorter races you never even get to see the benefits. During longer races on the other hand, after the third or fourth day we will notice that our body has adapted. We no longer feel the same impulse for sleep as direct correlation with day and night.

Click the link to read the whole item