Good lord it's been hot recently. Unless you happy to live in Alaska or the inside of an air conditioning unit, you'll have been trying to avoid losing most of your body weight in sweat as you succumb, in the UK at least, to record-high temperatures.
It's unlikely you'll have been able to summon the energy to do anything close to 'active', so maybe it's better to just listen to your body: scurry away into your cool, dark testing room, fire up your hi-fi system and keep yourself cool within an oasis of sonic tranquillity.