What is chest binding and is it dangerous?

An Instagram post by actor Emma Corrin has sparked discussion about the practice, but it is far from a new phenomenon

Binding and Tucking: Self Harm 101 — Genspect

Trans People Are Proudly Wearing Their Chest Binders as Stylish Outerwear

LGBT - Page 28 - The Telegraph

Chest Binding 101: How to Bind Your Chest Safely With ContourMD

Chest Binding: Use, Techniques, Side Effects

Binding Safely for Your Body: Tips for All Body Types and Sizes

Binding, Transition Resource Wiki

Which binder is better? With or without zipper? The price of the second one is more affordable. :/ : r/TransMasc

Bind Safe — The Get REAL Movement