Quote Originally Posted by channlluv View Post
My brain is going to explode.

I'm going to order the sports nutrition book as soon as I get home. I hope it will explain this Krebs cycle.

Okay, so the "trainer" at the Y took in my appearance and read the info sheet I'd filled out and started talking about watching my diet, avoid potatoes and pasta...same old stuff I hear from well-meaning friends who don't know me well. She recommended Weight Watchers. She also recommended I change doctors, or at least try hers because my doctor is missing something if I'm not losing weight, probably a low-performing thyroid, even though I told her I always test normal. Basically, she made a lot of assumptions based on her personal experiences.

I already know how to work the cardio machines, so she skipped that and took me to the Strive machines and explained how they worked, but I didn't get to work out at all. What a wasted afternoon.

Later, I stopped by a special swim store and bought a swim cap and new goggles. I'll work out tomorrow.

Roxy
I'm so sorry you had that experience. Gives all personal trainers a bad name.

Weight watchers is a good program if you can follow it. Having a group mentality, peer support, etc., can be inspiring.

Evil pasta and potatoes - they get blamed for so many things. Everything is fine in moderation. I think a baked potato is probably better than a deep fried zucchini slice, depending on how you doctor up your baked spud.

The Krebs cycle basically uses fat for fuel. But it is a slower process, hence it is used in endurance exercise. You must have some carbohydrate to turn the fat into fuel. And, you must have time to do endurance exercise because you need to pay attention to the calorie in vs. calorie out equation. Slower, endurance training burns less calories in 30 minutes than faster training.

That being said - I think the mind-body connection is equally important. Here's the deal: Say you do 30 minutes of pretty fast exercise - you're at 75 - 80% of your maximum heart rate - you can get out maybe 3 words before you get really winded. You get done and you're tired, maybe a little sore, and probably hungry. You've burned calories, but the trade off is fatigue - and perhaps a tendency to overeat because, after all, you burned those calories and now you're tired. Willpower is lessened.

OK, now you do the same 30 minutes at a more reasonable heart rate - say 70%. You should be able to carry on short conversations - 5 words maximum. You get done, you aren't as sore, you haven't burned as many calories, perhaps the rhythmic exercise has soothed your mind. So, the twinkies don't look as good because you're in a better space. You're more likely to exercise again tomorrow.

Beginning exercisers tend to hit it so hard that they get sore, fatigued and discouraged. They need to establish a habit of working out - but it's impossible when they suffer each time. OTOH, starting out slowly and enjoying moving your body can help cement that habit into your life. You are not as fatigued, you can work out again.