So unless you have an automatic way to store all that geeky data, I’ll suggest to ask for the min amount of numbers.
That said, anything user-configurable is a pain in the back since you have to add editors, validators, tutorials and such. I wouldn’t do it yet, unless you have a paying user or similar. Perhaps you can add 2 or 5 presets which you can rename for general purposes. And then you store the amounts for that activity and have an equivalent number across exercises, again, like calories.