"line",
          data: {
            labels: [],
            datasets: [
              {
                label: "Heart Rate (Last 48 Hours)",
                data: [],
                borderColor: "rgb(255, 99, 132)",
                backgroundColor: "rgba(255, 99, 132, 0.2)",
                tension: 0.4,
                fill: true,
              },
            ],
          },
          options: {
            ...defaultOptions,
            scales: {
              ...defaultOptions.scales,
              x: