The amount of control you put in your software is really good, as it seems to allow for every style of workout a runner would want without being too complex for everyday use. I feel like the time input boxes may be the source of mistakes by users if they don't get the format right, but overall I think the interface is very good.
I never would have thought that particles would act like this. I had never heard of atoms moving within molecules, which I guess says a lot about my expertise in chemistry. Even though I don't have much experience in chemistry, your presentation made the topic easier to understand.
I think your design considerations were pretty interesting. Especially when you mentioned that you had to pick a different chip because the one you wanted to use was at end-of-life. The entire systems engineering aspect is also fascinating because all the components have to be compatible to provide the functionality needed from the IEMs.