public async Task <Activation> DeleteActivation(string exerciseId, string activationId)
        {
            var exercise = await _exercisesRepository.ReadOneAsync(exerciseId);

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

            var result = await _activationsRepository.DeleteOneAsync(activationId);

            if (result == null)
            {
                return(new Activation());
            }

            return(result);
        }
 public async Task <Activation> DeleteOneAsync(string id)
 {
     return(await _musclesRepository.DeleteOneAsync(id));
 }