What asthma can involve
Asthma is a long-term condition affecting the airways, and it rarely stays the same from week to week. Cold air, a cold, exercise, dust or a change in the weather can each make a difference, and the effect is often delayed enough that the trigger and the bad night feel unconnected.
Annual reviews ask how often you have needed a reliever and how many nights you were woken. Those are precisely the numbers that blur. Writing them down as they happen means the answer comes from a record rather than an estimate, and the tiredness that follows a broken night has somewhere to be noted too.