This post brought to you by Charles Moreland, my roommate, a personal trainer, and someone who has corrected his teachers and brought quite a bit of proof to back himself up:
@Steven - Great job! Making a lifestyle change is always a hard decision. However, as I have seen many times before, contests tend to bring out temporary changes which cease shortly after the thrill of the contest's conclusion subsides. Make the change because you want to first. Any reward in addition to better health and fitness is simply bonus.
The change in diet is key here and I could literally write a book for you. What I have most of my clients do is eat how ever much they need to feel satisfied, but MUST not buy anything outside of Paleo diet guidelines + dairy (if you are not lactose intolerant) and certain grains not containing gluten.
Gluten tends to give a significant portion of the population leaky gut symptoms whether you are a diagnosed Ceoliac or not. It wrecks havoc on your digestive tract and you'll be much better off going off it for a while and slowly re-introducing it later.
You may also, depending on budget, may want to look into at least 1g or 2g of fish oil for the extent of this contest. The Western Diet is HIGHLY inflammatory and you'll need the fish oil to help reduce this and return back to normal.
@Emon - Burning calories is a boring and inefficient way to better your body composition and lower body fat. Burning calories does nothing to change DNA or build muscle and has an extremely poor effect on increasing anabolic hormones directly linked with lower body compositions. Most of my clients get rather frustrated with me in the beginning of training because I very often say that losing weight is easy. The discipline and dedication is definitely rough. But, eat the right foods and do short, intense, intermittent workouts and you will start shedding pounds like crazy.
@Antony - Perhaps you know more about Steven's diet than I do, but recommending someone start eating half of what they do currently can be a dangerous suggestion. In addition, telling people who are over-weight that they should run to lose weight only sets them up for serious pain and injury later on because not only must they re-learn proper running technique, but also deal with the stress that comes from weak leg muscles that simply cannot sustain the volume of perpetual running necessary to loose any significant weight.
Generally people see the best results eating ~500 calories under their daily caloric maintenance level. But again, this is a pain to calculate for most people so learning how to appreciate vegetables is highly important.
@Tibby - This information, as beautifully pointed out by Jon'C, is wrong wrong wrong wrong. You can go a hell of a long time as a novice (average) person without seeing protein breakdown. Also, as said before, running and jogging are similar in that they are boring and inefficient at producing weight loss results. You need to stimulate hormones, not burn calories.
@Spook - +1 for being on the right track! Whether you realize it or not, suggesting people bike to work or other such changes produce THE BEST results for people to lose weight despite it being a perpetual endurance exercise. It is not boring in the least because 1, you're outside (1a. you're also not inside) and it has a direct purpose (I need to get to work). This recommendation is also a direct lifestyle change which can greatly increase the activity you experience throughout a given day.
In addition, biking is also a low impact exercise so you'll save your knees. Watch out for hip and lower back problems though which derive from bad posture.
Also, tabata's are absolutely wonderful! From Dr. Tabata "4 minutes of Tabata style training can do more to boost anaerobic and aerobic capacity than an hour of typical endurance training." Pretty killer.
@Emon - your information is "technically" correct, but doesn't actually rebuttal anything said here...
ATP is an energy substrate used for contractions, yes, but "everything"? Well that's just silly.
Yes, ATP can be derived from fat, but that's only 1/3 of the equation. Your body has 3 different pathways it can draw from to create ATP: the phosphagen system, glycolysis, and the oxidative system. Without going too far in depth here:
Phosphagen -
1. Your body actually stores a small amount of ATP directly in muscle fibers and the surrounding anatomical structures for when it is absolutely imperative for a muscle fiber to fire quickly. ATP is a very heavy molecule, though, and so our body has derived ways to quickly create ATP while minimizing weight. That's where Creatine Phosphate comes in.
2. Creatine Phosphate is simply a single bond between 1 creatine molecule and 1 phosphate. An enzyme breaks this bond and the 1 free phosphate is combined with ADP (adenosine DI (meaning two) phosphate) to create ATP. This is an extremely fast process and fuels short intense exercises that last roughly 5-18seconds. When people take creatine supplements, they are essentially increasing their muscle's capacity to hold creatine phosphate.
Glycolysis -
1. Glycolysis is still relatively anaerobic (meaning it happens without the use of oxygen, however oxygen will be needed later to help shuttle out metabolic waste. Essentially you are converting glycogen (the storage form of glucose) into ATP. This is great and dandy, but this requires several more reactions than the creatine phosphate reaction, which only requires one.
2. While this process is slower, it also creates several ATP molecules while creatine phosphate can only produce one.
3. Glycolysis is the main contributer to lactate and H+ (acid inducing ions) buildup, which are considered metabolic waste.
Oxidative -
This is what you are referring to with respect to converting free fatty acids into ATP. This process is slow as hell, taking dozens of reactions to get the final product, but produces many ATP. This process also requires oxygen.
*It is important to note that all these systems and pathways are constantly working together to shuttle ATP into the muscles and the only thing that changes is which pathway is providing the majority of the ATPs.
Your muscles have two types of muscle fibers: Type I and Type II - Type II being further divided into Type IIa and IIb.
The phosphagen system uses mainly Type IIa and b, glycolysis Type II a and also converts Type IIb into Type II a, and oxidative only Type I. Type I and to a certain extent Type IIa muscle fibers are the only ones that have mitochondria necessary to perform aerobic glycolysis and aerobic oxidation.
@Darth Dan - Sorry, but the bodybuilders are wrong. Eating more meals a day but smaller portions does NOT increase or boost your metabolism. This is a fallacy. It also does not burn more calories...I'm not sure where you got that from...
Testosterone is highly important in burning fat stores you are correct with that. Good Job. However, more muscle tissue does not contribute significantly to daily metabolism. Your 7 "expensive tissues" do most of the work - with the brain being the most energy demanding tissue in your body. What matters is what you DO with the extra muscle you have. Simply having it won't do much.
Also, your trainer sounds good. Cardio is best intermittently and for short bouts. Where this running phase in our society came from I have no idea.
*Hopefully I addressed most if not all of the problems I found in this thread on a cursory glance. If you are interested, you may be interested in listening to a speech I gave on this subject not too long ago found here:
http://www.youtube.com/user/ritpublicspeaking#p/c/14420268F47A8CBB/1/FYtRatEywR4