text: const router = require("express").Router();
  const path = require("path");
  
  
  router.get("/exercise", function(req, res) {
    res.sendFile(path.join(__dirname, "../public/exercise.html"));
  });
  router.get("/stats", function(req, res) {
    res.sendFile(path.join(__dirname, "../public/stats.html"));
  });
  module.exports = router