POPSUGAR: What do your typical workouts consist of in addition to (obviously) tennis and training?
Madison Keys: I usually go back and forth between a cardio-based day and a weightlifting day. So Monday will be weights, Tuesday will be cardio. And then usually on Saturday, it will be kind of a combination circuit. So it's kind of best of the both worlds.
PS: What kind of strength workouts do you like to do?
MK: I obviously focus a lot on my lower body to have the strength there. So we do lots of either front squats or back squats and things like that. But also we do a lot of plyos and stuff, so we'll do a set of back squats and then go straight into box jump just to keep the fast twitch muscles going.
PS: And what kind of cardio do you usually do?
MK: I kind of do a little bit of everything. I like to do a lot of side sprints. Today, we did bursts of [Versa]Climber sprints. So a lot of my cardio is obviously quick or short bursts to mimic tennis. So whether that's shuttle runs or side sprints or bursts of climber sprints, it's usually 15 to 30, 45 seconds, and then break and then go again.