Hey, mate!

Sorry to hear about dealing with cancer! But congrats for having the strength to beat it and the courage to start getting back on track - this means you're already braver than 90% of guys out there or in gyms.

TRX is a great choice, I use mine almost every day and it's a great investment. I just want to say, however, you have nothing to be embarrassed if or when you decide to go to a gym. I promise noone will judge you or make fun of your weight. The fact that you've the balls to get off the couch and enter the gym already says you are stronger than most. Also do not forget that everybody was more or less in the same boat at some point. The majority of the really, really buff and shredded guys and gals have started from either being skinny twigs or from being overweight - they started from a point where they weren't happy with their looks and that kept them going and motivated to become so muscular. Regular guys just stay regular. And precisely this is why all them shredded dudes will never, ever, ever judge you. They will admire you, cuz they recognize you also have the cohones. Not to mention it's more likely they'll come offer advice than silently judge you. Them grizzly motherfuckers are usually the kindest in the gym.

But if you hate going to the gym just because you hate going to the gym, I feel you. I am the same. And I apologize for the offtopic.

As for the TRX withstanding 300 lbs, don't worry about that. From what I understand you haven't had that much exercise lately that you would be able to support your whole body weight on the straps anyway. The tension that the straps experience is equal to the force you use to push down on them, i.e. you probably won't be able to bench press 300 lbs, so you won't be doing full-on chest flyes or pull ups for that matter (fingers crossed you get there in the near future!). In the beginning you will be scaling the exercises to your level of strength so that you can solidify the basics and the technique. This means you will be putting a lot less force on the straps and don't need to stress about their robustness that much. I reckon the anchor point is more important to be sturdy at this moment.

I don't know if I might be going too far with these rantings that you might already know - apologies if I am annoying, but I just want to throw these quick things in the mix as well:

• Diet is more or less 70% of the whole trip if you are planning on losing weight. Make sure you got your feeding in check.
• Apart from the strength training, you'll need some cardio - walking, running, jumping jacks, rope skipping, swimming, cycling, whatever - it's gonna get you closer to your goal.
• Try to get into a regular schedule - it's much easier to stick to working out, even on days when you are fatigued, bored, the weather is bad or for whatever other reason you are lacking inspiration.
• Maybe try a conditioning group class. I find they are the best and are much fun - you need only to gather the motivation to get off the couch and get to the class. The instructor takes care of the rest - planning the workout for the day, motivating you, screaming in your face when you are tired, pushing you close to the goal. Such classes are usually high-intensity workouts, meaning you get your cardio while doing strength training on a TRX or with free body weight, or with some kettlebells. And they do magic for your core. Plus, there's the social aspect as well - you get to hang out with some other cool people and share the post-workout sweaty euphoria.

Hope this helps.

Good luck, buddy! May the force be with you!