Flu season has arrived. Don't resign yourself to a week in bed with a fever over 102°F (39°C). As someone who's relied on these strategies for years, I can vouch for their effectiveness against this virus.
Getting the flu isn't inevitable. These grandmother's tips, endorsed by the World Health Organization (WHO), offer reliable protection based on proven public health principles.

Be selective with interactions during outbreaks. Steer clear of anyone showing fever or coughing symptoms to minimize exposure.
A cornerstone of flu prevention: Thoroughly wash hands after handshakes, before meals, and post-public transport. If unavailable, resist touching your face or apply alcohol-based hand sanitizer.
Support your immune system with ample rest, a balanced diet emphasizing seasonal fruits and vegetables, and consistent exercise.
Flu thrives in low-sunlight regions where vitamin D levels drop. Combat this with vitamin D-rich foods like dairy (milk, cheese), eggs, and fatty fish such as salmon, tuna, and mackerel.
These have strengthened my defenses reliably. I enjoy them daily, making consistency effortless.