Is bravery always a physical thing?

No, bravery is not always a physical thing. It can also be mental or emotional. For example, someone who stands up for what they believe in, even when it's difficult, is showing bravery. Or, someone who overcomes their fears and does something that scares them is also being brave. Bravery is not about being fearless, it's about facing your fears and doing what's right, even when it's hard.