Wear loose comfortable clothing such as a t-shirt and tracksuit bottoms and invest in a sensible pair of supportive lace-up trainers.

To make the most out of your workout, be moderately active on most days of the week. Even if you're not purposely working out, try to include at least 150 minutes of cardiovascular activity over the week and include some resistance training. You don't have to hit the treadmill, going for a walk is great cardio and something you can fit easily into your day. 

Remember walk before you can run. Start any new activity slowly and gradually increase your levels of activity. Not only can will this help your body to adapt, but you'll also become stronger and lowers your risk of injury.

Always make sure you warm up as this will allow you to gradually increase your heart rate, reduce the risk of injury and prepare your mind for activity. A warm-up essentially consists of low-key cardiovascular activity such as a slow jog or walk. There's no need to stretch before you begin. In fact, stretching muscles when they're still cold does more harm than good. 

Your cooldown is as important as your warm-up so factor in 5 minutes to stretch at the end of your session. This will help to reduce your heart rate safely and improve your flexibility (it’s important to maintain good mobility and avoid injury).

Inform your instructor if you feel unwell, experience any change in symptoms or have a fever. Reconsider your training session when you're not well because you may be doing more harm than good when you push your body. When you don't feel right, rest up and allow your body to fully recover.

Always have any medication you may need with you, such as asthma inhaler, GTN spray, glucose tablets and so on. It's better to be safe than sorry. 

When it comes to exercise or activity, it's a good idea to eat something about one hour before your session. As for hydration, try and drink water before, during, and after exercise. Keep on top of it by sipping regularly rather than wait until you are thirsty. You may be tempted by sports drinks but remember they can be expensive and generally full of sugar.