Emma is a sports scientist and strength coach who has been in the running industry for over 15 years. Find out more about the work she does at
emmakirkodunubi.comor
@emmakirkyo
Blisters occur due to three main factors: friction, heat and moisture. When friction happens between the top layers of skin, they split and this friction can come from various sources; shoe and sock, shoe and foot, or an external factor like a fold or something in your shoe. The split in the skin layer then fills with fluid to protect the other layers, and this causes a bubble – otherwise known as a blister.
Now we know how a blister is caused, but how exactly is friction increased in a shoe? And how can you manage the heat of your feet especially on a warm day?