The normal range for a healthy thyroid is between 0.3 and 5.0 mU/L, with slight variations possible between labs. A TSH level of 3.6-3.8 is considered relatively normal, although slightly elevated. This may indicate a "sluggish thyroid," but does not necessarily require treatment with thyroid hormones. Regular monitoring of TSH levels is important, especially if symptoms of hypothyroidism are present. Maintaining a healthy weight through regular exercise and a balanced diet, such as the Mediterranean diet, is essential for overall health. Remember to aim for 30 minutes of moderate-intensity exercise five times a week and focus on healthy eating habits to achieve a healthy weight. The thyroid gland is not solely responsible for weight issues, so it's important to consider overall lifestyle factors as well.