Most nutritionists recommend a maximum average calorie deficit of 1000/day. So 700 is fine.
I think it definitely helps to look at this as a weekly average, rather than on a daily basis. If you are constantly adjusting what you eat based on how much exercise you did that day, it is very hard to build up long term healthy habits. The body has a usable reserve of energy of about 2000 calories, easily enough to cope with short term fluctations in workout intensity as long as the longer term average is fine.
In coming up with an intake recommendation, Spark takes into account your Exercise Goals. So as long as those Goals (accessible from the LH side of the Start page) are consistent with your increased workout intensity, then Spark will be recommending an intake consistent with your goals and needs.
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.
| current weight: 178.0