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Bike to run. Bike helps strengthen your knees, and it's very easy to target Zone 2, which achieves the highest calorie burn rate. This is how I got back into ru

• reducesuffering 1y ago
  Zone 2 doesn't have the highest burn rate. It's just easier to maintain it longer. 1 hour Zone 2 burns more than 30 in Zone 3, but 30 in Zone 3 burns more than 30 in Zone 2.
  • igtztorrero 1y ago
    You're right, I should have said: cardio zone 2 is where you achieve the highest rate of FAT calorie burning, since zones 3 and 4 primarily burn glycogen. For chubby people like me, who work 8 hours a day sitting down, the best way to stay in shape is to burn fat.
    • reducesuffering 1y ago
      True about the fat / glycogen, although that's short term. I'm not confident, but from what I've read on it, our body is quite good at converting and allocating calories. So that if you spend 1 hour zone 2 burning mostly fat but 600 cals, vs. 1 hour zone 3 burning glycogen but 800 cals, when you eat 600 cals you'll still backfill the fat/glycogen, but zone 3 would still have been better for weight loss because of the increased calorie expenditure. So that zone 2 is better for fat loss very short term, but not necessarily long term unless you're also putting in more miles than you would higher zones. But regardless of the nitty-gritty you're doing the right thing focusing on zone 2 because it almost assuredly helps you run more and overall burn more. Most people do way too little because the higher zones feel awful to them.