public static function getPrimaryMuscleGroupedByExercise()
{
return Exercise::join('muscles', 'exercises.primary_muscle_id', '=', 'muscles.id')->groupBy('exercises.primary_muscle_id')->orderBy('muscles.name')->get(['muscles.id', 'muscles.name', \DB::raw('count(exercises.primary_muscle_id) as count_of_exercises')]);
}
