Increasing calorie count.

Definitely play with your goals to get a better calorie fit. I'm 6' and 210 and my net daily calories is 1800...and that is for a 1.2 lb. per week loss! (I work out six days a week and typically eat about 2200 gross cals a day and have been losing 1.9 lb. per week for four months...your calories are DEFINITELY too low!)

I think you need to check your settings and activity level. You also need to eat more when you work out.

A man your height should never go below 1500 and that's without exercise.

1300 for a man your size seems EXTREMELY low - especially working out hard 5 days/week -
I like to use the calculator on freedieting.com
I put in your age as 30 (since you didn't say how old you are)
and this is what it came up with
Maintenance: 2786 Calories/day
Fat Loss: 2229 Calories/day
Extreme Fat Loss: 1680 Calories/day

so my guess is you are NOT eating enough

I don't know if this is the case with you but try watching your sugar...

BOTH sugar and artificial sweeteners increase your appetite, so cutting back on them makes weight loss easier, because you are not hungry all the time.

If I have a DIET COKE, no way I can keep at 1200 cal.
More foods now than ever before have hidden sugars in them and are sold as "real foods"
If I'm going to eat the sugar I want a cookie, gosh darn it!

I've really been amazed at how much sugar I've found in "REAL FOOD" Food manufacturers add a lot of sugar under a lot of different unrecognizable names into products, because it's cheap and it increases your appetite, so you eat more.

(I picked up a lean cuisine one evening forgot to check the sugar went to enter it to find out it had 30g of sugar, now

A) I only get 25g a day,
my favorite cookies are 9g for 15 cookies. If I'm going to eat sugar I want to enjoy a treat!!!

Also watch out for yogurts there usually very high in sugar, by plain and add a little hershey syrup or jam or cukes & dill at least YOU will be controlling your intake.

Oddly enough a lot of prepared tomato sauces have a lot of sugar 9g for 1/2 cup serving.. Trader Joe's has a couple of options for about 3g... or get plain and spice it up yourself for 1g... BIG difference)

Nutrient Dense foods keep you full longer, while proteins and fats (happy fats... plant based) appear to pack a lot of calories for the quantity you get to eat. A small amount will keep you satisfied longer. So it may be a better balance for you .

The general rule is no lower than 1500 calories a day for a man. Below that is consider entering starvation by WHO. I ate below that for a long time with no problem at 5'10" but I was obese. As I left obese and entered overweight I found it was not enough. Now I am within the normal BMI and eat more again. I suggest changing your goals to no more than 1 pound per week weight loss, and maybe modify your activity level. Eat all the calories you burn off exercising and if you have not already, increase your protein consumption to about 100 grams or even more a day.

1300 for a man your size seems EXTREMELY low - especially working out hard 5 days/week -
I like to use the calculator on freedieiting.com

Thanks for sharing this calculator. I love that it has a calorie staggering function. Very nice!

The numbers from here were not much different than I get here at MFP once I eat my exercise calories. Often that is the difference. When you enter your intended exercise in MFP it is NOT calculated into your daily calories, but instead is used to set your exercise goals for the week. MFP expects people to eat their exercise calories and if they don't they will certainly be in too high of a calorie deficit.

The thing that may be different if my extreme fat loss amount was still over 1500 while if I set up for 2 pounds per week on MFP it will be set at 1200 which is way to low for a male.

I've had to adjust mine as well, i found eating 1200 net calories just isn't enough for me, i started feeling tired and hungry most of the day so i've recently started upping my caloric intake and i'm going to see if that works for me.