What I’ve discovered while shooting photos and videos both with a shirt on, and without a shirt:

The footage with my top off is always more interesting

Why is this? My theories:

More texture, and ‘shadow muscles’

Textures are always more fascinating to us than boring old flat black. With my black t-shirt on, you can see less. More texture is better.

In praise of flexing

When you flex, you can see more movement in your body and muscles. Visually it is far more interesting! We love movement. We love kinesthetic movement in our photos, videos — whatever. The more ‘micro-movements’ in an image or video, the better.