Exercising more is good.
But I agree with Bubble - Spark's default goals are based on 30 minutes 3 times per week of moderate exercise, and it is fairly easy to exceed them if you push things a bit more. Update your Goals to more accurately reflect what you are burning.
It is important to eat appropriately to support higher levels of activity. Dramatically undereating can be effective in the short term (over a few days), but over the longer term, this is definitely not a healthy approach. It makes it difficult for your body to get all the nutrients it needs, and opening up too large a calorie deficit can lead the body to trying to close the gap by slowing your metabolism, sacrificing muscle to preserve fat, etc.
Spark's intake recommendations are based on what someone of your height and weight, and activity level would need, and going significantly under this number is not a healthy approach.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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