I have been commuting to work and have been riding an average of 105 minutes a day @ a heart rate of 150 bpm for four weeks consistently :mad: and have not changed what I eat . I have not lost a pound. Is this a sign of a thyroid problem? Is this normal?
With the online calorie estimators @ my weight, I would be burning over 1500 calories a day.
Talk about a discouraging weight loss program!!
Some one help