router.post(’/’, async (req, res) => {
const { search } = req.body;

try {
if (search) {
const exercisesData = await fetchData (‘https://exercisedb.p.rapidapi.com/exercises’, exerciseOptions);

  const searchedExercises = exercisesData.filter(
    (exercise) => exercise.name.toLowerCase().includes(search)
           || exercise.target.toLowerCase().includes(search)
           || exercise.equipment.toLowerCase().includes(search)
           || exercise.bodyPart.toLowerCase().includes(search),
  );

  res.json(searchedExercises);
} else {
  res.json([]);

Its always return blank