Midday slump? Science shows this small change can boost your mental performance

It’s just after lunch and you’re feeling the slump. It’s not just sleepiness, but your decision-making power, your ability to think up creative solutions and your willingness to contend with the decisions required in the next meeting have plummeted. You could have a coffee or a tea refill. You could tell yourself there’s nothing you can do and get on with it. You could even start looking into whatever the internet is telling you is...