A person can need encouragement to rest as much as encouragement to continue.

Most of the support around us pushes in one direction. Keep going, nearly there, do not give up: it is well meant, and to someone already running past their limit it can sound like a demand. Being told that stopping is allowed is sometimes the more useful thing to hear, especially from a person whose opinion they care about.

Think of someone who is pushing hard right now and tell them plainly that resting would not disappoint you. Where you can, make it easier as well as permitted, by taking something off them for a week.