TL;DR
The benefits of training barefoot or wearing shoes on sand.
The benefits of training barefoot or wearing shoes on sand depend on the context.
Training on sand
As with many training questions, there is no single answer. Internal factors concerning the individual and external factors concerning the sand should guide the choice.
The original article lists these reasons for considering barefoot training:
- Developing the muscles of the legs and feet.
- Improving running technique.
- Working towards future injury prevention.
- Knowing that the surface is in good condition.
When to wear shoes
The original suggestions favour footwear when:
- You are a beginner.
- You are returning from a recent injury.
- The ground contains objects that could cause cuts or injuries, such as shells or stones.