const workout = []
for (let i = 0; i < 10000000; i++) {
  workout.push("slot");
}

const workout = [];
for (let i = 0; i < 10000000; i++) {
  workout[i] = "slot";
}

const workout = new Array(10000000).fill("slot", 0, 10000000);

const workout = Array.from({ length: 10000000 }, () => "slot");