public async Task <IActionResult> GetExercise([FromRoute] int id)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var exercise = await _exerciseService.FindBy(m => m.RecordId == id);

            if (exercise == null)
            {
                return(NotFound());
            }

            return(Ok(exercise));
        }