Resistance is holding onto thoughts that block your experience of Well-Being. Worry, frustration, resentment, annoyance, etc. — all are manifestations of resistance.
Clinging to resistant thoughts takes a lot of energy — energy that could be easing your path.
Ironically, parents often complain about (i.e., resist) not getting enough sleep. When you resist that condition, the resistance drains your energy, causing you to need even more sleep!
Of course it's good to get as much rest as you can when you're exhausted. But you can also balance the equation from the inside by releasing the resistance that creates the stress that makes you tired — including your resistance to tiredness itself.
Today (and tonight) notice how you talk and think about sleep and rest. Gently release any thought that feels stressful. Imagine that every time you release a resistant thought, it's like giving yourself an hour of sleep. :)