I’ve been working out for about 4 months now (HIIT on a spin bike and a bit of weightlifting ~20 mins.) three times a week. I’m seeing good improvement in health and physique despite having no idea what I’m doing.
My motivator was calories, but now when I work out I burn way less calories because my body is getting used to the stress, I think. What’s happening? Is my workout less useful than before? Can I not eat as much or is my body burning more fuel now?
In: 54
There are a lot of variables in calorie output for the body.
A basic explanation is that your body is becoming more efficient at the same activity and uses less energy to perform the same task (the “it doesn’t get easier, you’re just getting better” attitude).
Weight lifting as a prime example, your maximum squat is now probably larger than before, the movement is more familiar/dynamic and supporting muscles are engaged. So doing the same weight as you started will feel like a dodle, even though the same amount of “work” (in a physics sense) is done, you (the machine) are better at doing it.
Also for cardio a strong heart and reduced overall mass is easier to move, and an improved adipose/muscle mass ratio will effect caloric output as your moving less dead weight
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