It’s harder to stop something after you’ve started it because whatever activity you’ve engaged in now has momentum going for it. Conversely, it’s harder to start something before you make the ...

There are two principles in nature that help us understand how people can become trapped in counterproductive cycles. Inertia can keep someone in situations or activities that seem to be stalled, ...

Sleep inertia is a common symptom of idiopathic hypersomnia (IH). With sleep inertia, you feel very groggy and out of sorts when you wake up. It usually happens after you’ve been asleep for at least ...