By today’s standards, the endurance running theory could indicate a man has other key traits for being a good provider, such as generosity and intelligence – two very sexy qualities.
Now, before you go sizing up your index to ring finger ratio, know that the study does note that people who don’t naturally come with higher sex drives, can train their way up to one. Healthy diet and strict workouts can actually help with both your speed on the track, as well as your abilities between the sheets. So don’t lose all hope just yet!