Why Do I Need A Personal Trainer? Irrespective of your age or fitness ability, a FUSION fitness Personal Trainer can provide you with the motivation, advice and encouragement that will give your workouts an amazing boost. Whether you need some extra support training for an event, a holiday or longer term arrangement, having your own trainer is the best way to achieve your goals sooner. It’s not just about what you can achieve in the gym; your trainer can also provide advice on nutrition and lifestyle changes, all geared up to helping you achieve your goals faster.