A high level of physical fitness is something many people want to achieve. This is because improved physical fitness is associated with a better looking body, higher energy levels and an improved immune system. In this article I provide three key ways to improve your physical fitness levels.1) LIFESTYLE CHANGE:- One of the easiest ways to improve your current fitness levels is to make small, positive changes to your daily routine. Specifically, you need to improve your diet and your exercise routine. As I have mentioned, these changes do not have to be large. If you make small, regular changes to your lifestyle, over time these will become significant changes which provide impressive results.One way you could change your eating habits is by eating one less takeaway a week and substituting this for a healthier, home cooked meal. Then in the second week you could build on this by eating a salad for lunch once or twice a week. You can alter your exercise habits in a similar way. In week one take the stairs instead of elevators. In week two take a thirty minute brisk walk once or twice a week. As the above examples show, multiple small changes can together become substantial changes which contribute towards higher fitness levels.2) FITNESS EQUIPMENT:- Another great way to improve your fitness levels is to take advantage of the large selection of fitness equipment on the market. When choosing fitness equipment you first have to decide what your fitness targets are. Do you want to improve your cardiovascular fitness? If so then a treadmill, rowing machine or exercise bike will be most suitable for you. Do you want to tone and strengthen your muscles? Then free weights and weight machines are what you should be using.You also need to consider whether you want to purchase the fitness equipment for yourself or take advantage of the fitness equipment at the gym. Both have their own distinct advantages and disadvantages. Purchasing your own fitness machines means you can exercise whenever you want, inside your own home. However, unless you have a lot of storage space and money you will be unable to purchase the range of equipment that a gym can provide. The gym can provide you with a large range of equipment for a relatively low cost. However, when the gym is full you will have to wait for machines and you will also have to spend time commuting to and from the gym.Whatever you choose regarding your fitness equipment you must consider one important factor. Fitness equipment will assist you in your exercise but it will not do it for you. You still have to put in the time and effort that leads to improved fitness levels.3) FITNESS TRAINER:- Taking advantage of a fitness trainer is a great way to improve your fitness levels. You can explain your fitness goals to the trainer and then they can show you the best way to achieve them. A fitness trainer should also help you stay motivated, show you where you are going wrong and lead you down the right path, making it more likely that you will achieve your targets.When choosing a fitness trainer there are a number of factors you should consider. A good fitness trainer should be able to provide success stories from their past which prove their credentials. You should also look at their qualifications to measure how well trained they are. Finally, you should arrange a meeting with a number of fitness trainers and see which ones match your personality.As you can see there are plenty of options available to you if you want to improve your fitness levels. Although I have given you the advice you have to take that first step and implement fitness training into your daily routine. Choose whichever ideas you think are best for you and get started. The sooner you begin to take action, the sooner you will start to see results.