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

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

            return(await _activationsRepository.ReadOneAsync(activationId));
        }
        public async Task <Activation> ReadOneAsync(string id)
        {
            var result = await _musclesRepository.ReadOneAsync(id);

            return(result);
        }