New Delhi, Nov. 15 -- Many of us feel tired during the day, struggling to stay awake at work or at home. Often, stress, poor sleep, unhealthy diet or lifestyle habits are the root cause behind fatigue. The good news is that small changes in daily habits can make a big difference to your energy levels, as per the National Health Service (NHS).

Eating smaller meals every 3-4 hours helps keep energy levels steady. Include fruits, vegetables, whole grains and proteins in your diet. Don't rely on just one or two big meals a day, which can cause energy dips.

Exercise may seem hard when you are tired, but it actually improves energy over time. Even a 15-minute walk can refresh your body.

Gradually increase physical activity to reach 2.5 hours...