It turns out there is a way to make running easier!
That’s right, apparently if you smile while you run it actually makes it easier.
A study found that "when we make a facial expression, we may experience the emotional state we associate with the expression."
This is apparently because "we associate smiling with happiness or enjoyment, states that make us more relaxed, so when we smile, we are consciously trying to relax," Noel Brick a lecturer at the University of Ulster who coauthored the study explained.
"By adopting the facial expression of frowning, however, we are experiencing an emotional state of feeling tense or less relaxed."
Estelle and producer Max put it to the test …
Watch below to see how they went!