I'm a bit worried because I have anemia and my ESR levels are raised. I generally do slow-paced walking covering an average of 45 km, but my resting heart rate seems to be in the range of 48 to 65. My last two ECG readings were 53 and 48. I'm not experiencing any fainting spells or dizziness, but is this okay and considered normal?

Your resting heart rate of 48-65 beats per minute is within the normal range for adults, especially for individuals who engage in regular physical activity like slow pace walking. Anemia and raised ESR (Erythrocyte Sedimentation Rate) may indicate an underlying inflammatory condition. Since you do not experience faint spells or dizziness, it is reassuring. However, it is important to further investigate the cause of anemia and raised ESR. I recommend consulting a doctor for a complete evaluation and appropriate management.