When you’re hit with a cold, flu, or other viral illness, the most important things you can do are rest, stay hydrated, and manage your symptoms while your body fights off the infection. Most viral illnesses don’t require a doctor’s visit or medication beyond what you have at home. Here’s how to take care of yourself effectively and get back on your feet faster.
Rest Is the Single Best Thing You Can Do
Sleep is your immune system’s most powerful tool. During sleep, your body ramps up production of the proteins that coordinate your immune response. When sleep is restricted to just four hours a night for six days, antibody production drops by more than 50% compared to people sleeping normal hours. That’s a dramatic difference, and it means pushing through your day while sick can genuinely slow your recovery.
Cancel what you can. Work from home if possible, or take a sick day. Aim for at least eight hours of sleep at night, and don’t fight the urge to nap during the day. Your body is redirecting energy toward fighting infection, which is why you feel so wiped out. That fatigue is a signal, not a weakness.
How Much Fluid You Actually Need
Baseline recommendations are about 15 cups of water a day for men and 11 cups for women, but illness increases your needs. Fever, sweating, and a runny nose all pull water from your body faster than usual. If you’re vomiting or have diarrhea, dehydration can set in quickly.
Water is fine, but you don’t have to limit yourself. Broth, herbal tea, diluted juice, and electrolyte drinks all count. If nausea or vomiting makes it hard to keep fluids down, take small sips of about one ounce (30 ml) every three to five minutes rather than gulping a full glass. This slow approach gives your stomach time to absorb the liquid without triggering more vomiting.
Signs you’re getting dehydrated include dark yellow urine, dizziness when standing, dry mouth, and urinating much less than usual. If you notice these, increase your intake right away.
Managing Fever, Aches, and Pain
A fever is your body’s way of creating an environment that’s hostile to viruses. In adults, fevers below 103°F (39.4°C) are generally not dangerous and don’t necessarily need to be treated. If your fever climbs above that level, contact your healthcare provider.
Over-the-counter pain relievers like acetaminophen (Tylenol) and ibuprofen (Advil, Motrin) can bring a fever down and relieve headaches, body aches, and sore throat pain. The key safety limit for acetaminophen is no more than 4,000 milligrams in 24 hours. Be careful here: acetaminophen is an ingredient in many combination cold and flu products, so check labels to avoid accidentally doubling up.
Relieving Congestion and Sore Throat
A stuffy nose and raw throat are often the most miserable parts of being sick. A few simple home remedies can make a real difference.
For a sore throat, gargle with warm salt water: mix a quarter to half teaspoon of table salt into eight ounces of warm water. This draws fluid out of swollen tissue and can temporarily ease the pain. Repeat several times a day as needed. Warm liquids like tea with honey also coat and soothe an irritated throat.
For congestion, keep your home’s humidity between 30% and 50%. A cool-mist humidifier in your bedroom can loosen mucus and make breathing easier, especially at night. A hot shower works similarly. Saline nasal spray or rinses help clear out mucus without any medication side effects. If you need faster relief, a decongestant nasal spray works, but limit use to three days to avoid rebound congestion that leaves you more stuffed up than before.
What to Eat When Nothing Sounds Good
If you’re dealing with nausea, vomiting, or diarrhea, bland foods like bananas, rice, applesauce, and toast are easy on your stomach for the first day or two. But there’s no need to restrict yourself to only those foods for longer than that. The old “BRAT diet” advice has never been backed by comparative studies, and eating so restrictively for too long can leave you short on the protein and nutrients your body needs to recover.
Once your stomach settles, shift toward more nutritious but still gentle options: cooked carrots, butternut squash, sweet potatoes without skin, avocado, eggs, skinless chicken or turkey, and fish. These foods are easy to digest while giving your body the building blocks it needs to repair and fight the infection. If you have a respiratory illness without stomach symptoms, eat whatever appeals to you. Loss of appetite is normal, but try to get something in, even if it’s just soup or a smoothie.
Cold, Flu, or COVID: How to Tell
The symptoms of these three illnesses overlap a lot, which makes it hard to tell them apart without a test. But some patterns can give you a clue.
- Common cold: Usually centers on your nose and throat. Sore throat, runny or stuffy nose, sneezing, and a mild cough. Fever is uncommon in adults with a cold.
- Flu: Hits harder and faster. Fever, chills, headache, muscle pain, and significant fatigue are typical, along with the same respiratory symptoms. Vomiting and diarrhea can also occur.
- COVID-19: Shares most flu symptoms, including fever, body aches, fatigue, cough, and congestion. The distinguishing feature is a change in or loss of taste or smell, though this has become less common with newer variants. Symptoms can also vary based on vaccination status.
If you want a definitive answer, at-home rapid tests for both flu and COVID are available at most pharmacies. Knowing what you have matters most if you’re at higher risk for complications or if antiviral treatment (which works best within the first 48 hours of symptoms) could be an option for you.
When to Go Back to Normal Activities
The CDC’s current guidance is straightforward: you can return to normal activities when both of these have been true for at least 24 hours: your symptoms are improving overall, and you haven’t had a fever without the help of fever-reducing medication. After that point, you’re typically less contagious, though your body is still clearing the virus for several more days.
For the first few days after returning to your routine, take extra precautions around others. Wear a mask in crowded or indoor settings, wash your hands frequently, and keep your distance from people who are elderly, pregnant, or immunocompromised. If your fever returns or your symptoms worsen after you’ve resumed activities, go back to staying home until you meet the 24-hour criteria again.
Warning Signs That Need Medical Attention
Most viral illnesses resolve on their own within a week or two. But certain symptoms signal that something more serious is happening. Seek care promptly if you experience difficulty breathing or shortness of breath that doesn’t improve with rest, chest pain or pressure, confusion or difficulty staying awake, inability to keep any fluids down for more than 24 hours, or a fever above 103°F that doesn’t respond to medication. In children, watch for rapid or labored breathing, refusal to drink fluids, and unusual lethargy or irritability.
Trust your instincts. If something feels significantly wrong or different from past illnesses, it’s worth getting checked out rather than waiting it out.