Feeling very tired, dizzy, no energy

Make sure you do consume enough carbs, remember, even though carbs give you calories, they are fuel for your body, they are the ones that give you energy, specially if are exercising a lot. Make sure you have a protein bar, or may be a cereal bar, or something containing carbs before you exercise. Carbs doesn't necessarily means fat, you could have a yogurt, a cereal bar, a fruit, etc. I hope this helps!

I'd say that you need to let your body rest. You mentioned earlier that today is your rest day, which is a good idea. Don't overdo your workouts because you might get injured and/or lose motivation.

Weight loss is a slow process and you should never lose more than 1% of your body weight each week. Keep eating steadily, keep working out, but maybe reduce intensity or duration of session, and you might feel better.

Another clue would be to check if you eat evenly throughout the day. Some people tend to eat a lot in the morning and close to nothing in the evening, which is a bad idea.

Getting eight hours of sleep is also essential.

Hang in there, your body is simply getting used to your new lifestyle

I had a terrible dizzy spell about 6 weeks ago . It lasted the entire day! My vision was kind of blurred like I couldn't focus. And I was exhausted. I was really shaky. I self diagnosed as possible water intoxication but my cals were definitely too low at that point as well. I stopped chugging so much water and it never happened again. Go figure!!

Sleep is a necessity... Make sure you get enough!
Healthy fat is essential for making hormones, replacing myelin coating around nerves, and replacing cell walls the body's stored fat will not work well for these processes. Shoot for 20 to 30 percent of your calories from healthy sources like avocados, nuts, olive oil, and seeds.
Hydrate!

I have to say I get the blurry vision and can last up to 6 days, get dizzy, hardly walk........legs cramp and very tired. I do suffer from water intoxication and that's drinking to much which gives me low sodium. I now have to go no more than 3 glasses a day and 2 powerade zero a day .
Seems like you need to start eating back your calories as you are doing a lot of exercise and not a great amount of sleep.
I also suffer from anxiety which as you know can bring on many different physical symptoms.

You weigh 120 lbs and are trying to lose 7 to 10. You do not need to lose anymore weight.

Seriously, has anyone but me noticed this young woman does not need to lose weight?

You're going to feel so much better now you've upped them.

Also wanted to add - it might be worth seeing a doctor for your anxiety issues, if you haven't already? There's so many wonderful therapies and coping techniques around these days.

You weigh 120 lbs and are trying to lose 7 to 10. You do not need to lose anymore weight.

Seriously, has anyone but me noticed this young woman does not need to lose weight?

That is what I was thinking too.
She probably needs to exercise to tone and reshape her body vs losing those 7-10 pounds.

I get dizzy when i have slept less, but not too tired. I get tired, dizzy and weak feeling when its a combo of less sleep and working out too much previous day and not eating enough.

You weigh 120 lbs and are trying to lose 7 to 10. You do not need to lose anymore weight.

Seriously, has anyone but me noticed this young woman does not need to lose weight?

This^ I'm glad you upped your calorie intake. You will feel better with a healthier approach to your body. In your profile you state that you used to weigh 108 3 years ago. At the age of 18 you weren't even fully grown for crying out loud!

It's fine. Her goal BMI is 20.6 which is well into the healthy range.