To prevent swimming goggles from fogging up, you can try the following methods:
1. Rinse the goggles with clean water before using them to remove any residue that could contribute to fogging.
2. Apply a small amount of anti-fog solution or spray to the inside of the lenses and gently rub it in with your fingers. Make sure to rinse off any excess solution before wearing the goggles.
3. Spit on the inside of the lenses and rub it around before rinsing it off. This may sound unorthodox but can be effective in preventing fogging.
4. Avoid touching the inside of the lenses with your fingers as the oils from your skin can contribute to fogging.
5. Store the goggles in a protective case when not in use to prevent dust and debris from accumulating on the lenses.
These methods can help keep your swimming goggles clear and fog-free during your swim.