CptBlackBird wrote:
good luck increasing stamina with reds
I don't get this analogy and I see it get thrown around a lot. With just about anything I know if people want to increase stamina doing something they just lengthen the time doing the activity at the desired intensity.
You don't see marathon runners lugging around big weights on their runs because 'muh stamina', in fact this is true for almost everything. The only exceptions I can think of is when
it's actually necessary to have an elevated amount of force/weight that you need to use/lug around (i.e. soldiers on a march, hikers, etc) - but in our case, you're not being forced to play osu with tough keys, it's a self-imposed preference kind of thing, not a necessity. You should be able to build stamina with reds just as well or almost as well as you could with any other key.
If you want more stamina clicking keys then click keys more often. You don't need to strap weights to your fingers and make the springs on your K1/K2 tougher than iron to get good returns.