Cardiovascular Exercise

  • Why can we exercise for less than an hour, yet need to sleep and recover for so long?

    Think of it this way. Exercise places stress on your body. Exercise runs your body down. Exercise, in itself, doesn't do your body any good at all. It makes you feel tired, run down, lethargic, sore etc. BUT exercise does the wonderful thing of providing a stimulus for your body to recover.

    Recovery initiates itself immediately after exercise when your body is so run down that it needs to repair and rebuild itself so it can handle the physical stress more effectively next time.

    Recovery is a slow process. If your exercise session is intense enough, you can stimulate a recovery response for up to a week or more (depending upon the stimulus).

    Your body can only handle so much physical stress through exercise. If you persist, your body will take measures to shut itself down. The first is fatigue which you will feel during exercise. From there, you may become light headed, dizzy etc. Then you may faint, dehydrate etc. If you continue to persist, that's when some serious medical complications can arise because the body isn't equipped to handle such extreme forms of physical stress.

    Sleep is when a lot of your recovery occurs. As I said, it's a slow process, which is why you need so much of it!

    You may be interested in signing up to our course, Conquering Your Body.  Within one of the lessons, we discuss recovery in great detail.

  • Is boxing a good high intensity cardio workout?

    Absolutely!  Boxing can be a highly effective cardiovascular exercise to really get the heart rate elevated.

    A very common misconception is that cardio has to necessarily use the lower body.  Not so.  If you are training to elevate your fitness and/or enhance fat oxidation (or fat loss), any cardio that you perform that elevates your heart rate is going to be highly effective.

    Boxing is a great example.  You can perform a great high intensity interval workout with boxing alone.  If you want to try a demanding interval boxing regime, try this: 30 seconds all-out, 30 seconds slow and easy, repeated for 20 minutes.  If you give it your all, you will be exhausted by the end of the cardio session!

    Here's the key to great results - perform a format of cardio that you enjoy.  If you really like boxing, then stick with it.  If you enjoy it, chances are that you will get the most out of each session, whilst also increasing the likelihood of long-term consistency.

  • During and after exercise, what is happening in the body with regards to fat, carbohydrates, proteins and muscles?

    During your workout you are primarily utilising both carbohydrate and fat as primary sources of energy.  Fat tissue is constantly being broken down in the body and consequently, fatty acids are available in the blood stream.  These fatty acids are delivered to various cells (including muscle cells) to assist in energy generation.  A similar story is true with carbohydrates, where blood sugar (glucose - what results from broken down carbohydrate) is delivered to organs and tissues to maintain normal function.  When exercising, your muscles also utilise glycogen, which is the muscles stored carbohydrate.

    The bout of exercise that you undertake is a form of physical stress.  You stress your muscles to the point at which there is a significant degree of cellular damage.  Upon completion of the workout, your body goes to work straight away at repairing these cells.  This is accomplished through the utilisation of fatty acids, carbohydrate and also amino acids (obtained from proteins).  Essentially, your muscles are "re-building" themselves.

    You can see that as this repairing (or recovery) process is being undertaken, a lot of energy is being expended by the body to recuperate.  This is where a significant degree of fat tissue can be broken down.

  • What is correct breathing technique when exercising?

    Breathing is vitally important with both resistance training and cardiovascular exercise.

    With weight training, breathing incorrectly can significantly increase blood pressure during the exercise.  This can be dangerous as blood pressure readings of over four times the normal rate have been recorded!

    When performing a resistance training exercise, breath out on the concentric phase and in on the eccentric phase.  The concentric is where you are contracting the muscles being targeted, or the harder part to the exercise.  So, for example on squats, concentric is as you are pushing up and the eccentric is on the way down.  For bench press, the concentric phase is as you are pushing up and the eccentric phase is as you are lowering the bar down to your chest.  For lat pulldown, the concentric phase is as you are pulling down and the eccentric phase is when you are returning to the starting position.

    With cardio training, breathing correctly is imperative to deliver oxygen to your body.  By taking short, superficial breaths, you will not deliver a substantial amount of oxygen to the muscles being worked.  As a result, your output will be significantly inhibited.  Try to focus on deep and controlled breathing, no matter what the intensity of your cardio session may be.

  • I want to tone up. What exercise and supplements would you recommend?

    In order to tone up, you need to perform a combination of fat loss and muscle gain.  Depending upon how much fat or muscle you currently carry, the gain/loss ratio for muscle/fat respectively may be leaning toward one side or another.  Note that we are not talking about muscle "bulking", but rather some muscle gain to provide shape and tone.

    In order to build some muscle, you do need to establish a sound resistance training regime.  A gym environment would be ideal, but if you don't have access to a gym (or can't afford one), you can certainly make do at home too.  I have a number of clients with very limited training resources, yet achieve some amazing results.

    You do need to develop an effective resistance training routine.  I wish I could give you a specific program to follow, but because everyone is different in their lifestyle, preferences, medical/injury history, goals etc, this is nearly impossible for me to do in such a generic context.

    Nutrition wise it is vital that you establish a sound nutritional intake with healthy eating choices BEFORE considering supplements.  This means that you consume foods from a variety of food groups, consistently throughout the day and as naturally (or unprocessed) as possible.  Once this has been done, you may consider some supplements such as a protein powder and a multivitamin.  Various other supplements can promote fat metabolism, but it is important that these are used in conjunction with a well established exercise and nutritional regime, rather than relying on a particular supplement to do the work for you.

    If you would like some specific advice, guidance, motivation and accountability with your training, please consider our highly intensive personal training services.

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