re: Help me lose 10-15 pounds

Walking just to walk at your normal walking pace isn't going to be a big needle mover. You need to get your heart rate high into the zone where you are still metabolizing fat for energy but low enough you haven't gone anaerobic yet. For me that's somewhere around 145bpm so I aim just below that around 140bpm. For walking I have to walk at a very brisk pace almost jogging. Instead of walking faster you can also add weight. This is where Rucking can be efficient to to boost your heart rate while walking.