The 'Energy-Based Scheduling' Hack

It means you are literally unreachable during certain hours. 

Don’t check your social media or email until after your 3 hours of deep work. And schedule all of your meetings for the afternoon, after lunch.

Your morning time should be spent on output, not input. 

Productivity is directly related to your energy level.

Find your most productive hours — the time of your peak energy — and schedule Deep Work for those periods. Do low-value and low-energy tasks (also known as shallow work), such as responding to emails or unimportant meetings, in b...

Instead of watching the clock, energy management can be used instead of time management. Our positive mood is high in the morning, dips in the afternoon, and rises again in the evening. We can use this information to our advantage and plan for our high-priority work when our mood...