Welcome to 3FC!
First of all, congratulations on making some changes and adding in activity!
I have to get some groundwork out of the way before I start making suggestions.
1) You've only been at this two weeks. That's not a long time to always assess changes.
2) Not all changes will show on the scale. I'm not sure if you're male or female, but some changes will take longer than others. Have you started measuring yourself with a tape measure? Have you started taking some pictures to compare?
3) It's really difficult to
actually tell how many calories you've burned during a workout. Estimators on equipment & online are notorious for, well, overestimating by a lot.
4) Weight loss and changing habits are trial and error. This is natural for everyone to get to a point where they need to switch some things up or take a look at what they're doing. It happens all along the journey. So, while you might be frustrated now, there are solutions ... but they will take time to find. (Kudos for reaching out for help instead of just throwing in the towel!)
5) There are some really popular myths out there that
when you eat has to do with weight loss. There's absolutely no research that proves this fact. It does not matter if you eat late at night. I often do, and I've lost 45 pounds. What
does and can matter, though... how many calories total you're eating.
6) Exercise, when we first begin it can actually cause water retention. It makes it look like we've gained weight when in actuality... it's not FAT. So that could affect what you're seeing on the scale.
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Now that those things are out of the way, here's what I see.
You mention what you eat for breakfast, and while you say you cut out sugary drinks I have to wonder if you noticed that there's sugar in each and every item that you listed you eat for breakfast. Yogurt... Fiber One Bar... Cereal... very often have sugars or high fructose corn syrup in them. You don't mention what brands for all, but a lot of these things do have sugars in them so it's just something to at least be mindful of even if you don't want to change it.
Now, some people have sugar sensitivities, etc. Some people prefer to cut it out as much as possible. I don't personally have a huge problem with sugar, but it is something I like to take note of, and I have cut out a lot of brands from my life that had HFCS in them... simply because sugar does not need to be every single thing I eat.
Do you have that half a cup of cereal with milk? Remember to count the milk.
The banana & apple are fruit and contain a lot of natural fiber and nutrients so those things don't set off any alarms. If you really wanted to change something about them, eat one
or the other at breakfast time and not both, but again, fruit doesn't really affect me in a bad way.
Where is your protein and when are you getting your vegetables? You did give us a glimpse of your breakfast, but maybe the rest of the day would help us give a more detailed feedback.
You're probably going to get a lot of suggestions and ideas. We may not be able to give you concrete answers about what's going on inside of your body (we're just online, we can't see everything), but we will be able to point out what we see from what you post. And hopefully, you'll be able to get some good advice for your situation