Is there a link between weight training and fatigue?

From my own experience with exercise, it is meant to be tiring and that's one of the reasons why I do it, it helps me to sleep whereas I could never get enough sleep when not exercising. I feel as though it's a good healthy tired. I find this sort of tiredness makes me feel better, compared to being tired from bingeing and eating too many sweets, carbs, processed food, unhealthy junk food fats like mcDs and lying on the couch all day. That yucky, lethargic and "feeling fat" type of tiredness.

get a complete physical and make sure they check your thyroid, etc.

I have read where every 8-10 weeks or so of heavy lifting you should take a 1 week break. A week of nothing but light cardio. Have you tried that?

Related to bloodwork / physical, I see a cat in your ticker. Is it yours? Does it go outside? If so you might want to read up on Toxoplasmosis (cat scratch fever). Sounds wierd I know, but I used to work as a vet. tech and contracted it.

At one point I could barely drag myself in the house and onto the couch to sleep without taking my coat off. I did have some swollen lymph nodes to go along with it though. A doctor checking your neck or under your arms would notice that. Anyway just a thought and fatigue was really my only strong symptom.

It sounds like overtraining to me. Your body needs lots of recovery and rest time to rebuild. Strength training is a lot more physically demanding than cardio, and requires more recovery time. Also, do you eat enough carbs? Strength training uses glycogen, and if you eat very low carb, glycogen could be exhausted, which could also have a tiring effect, as glycogen is where your body draws quick energy to do intense actions with (like weight training,) it can utilize fat when glycogen is exhausted, but it takes much longer, and can lead to feeling fatigued.

I had a quick peek at your food diary - you're pretty consistently way under on your carbs. Some people function very well on low carb some don't.

I just had this conversation with a friend of mine.

Try music...

Make a couple of playlists that do this:

1. Think of the music your mom & dad, perhaps older sisters/brothers/cousins used to play, or maybe songs that were popular during that time in your life. Listen to those. It gives me child-like energy to get things done and a light spirit of "anything is possible."
2. Music with a strong base beat and play it loud--using headphones will work. You can feel the rhythm and it wakes up the body.
3. Music with a block. I really like Alanis Morrissette for this. The melodies could be broken up into 4 songs, so it blocks ambient noise from whatever situation or place you are in so that you can concentrate on what you are doing at the time. I drive a Grand Prix--not a noiseless car. I can only hear my thoughts as I'm navigating the roads. At work, it blocks all of the distractions--laughter, chairs scraping, boxes dropping, chatter, footsteps, conversations.

You might want to consult your doctor and have some blood work done. Fatigue can be a warning sign that something is wrong. Voice of experience here.

Do you have allergies? I only ask because mine are crazy and that combined with slight over training would be enough to floor you.

This. When I was training like crazy, undereating carbs to cut weight, and fighting allergies I wound up with similar symptoms.

I had a quick look at your diary - clicked through about 2 weeks worth. What do you use to count your exercise burns? MFP? They seem low compared to mine, but your routine seems similar. I measure mine with a HRM - I average 330 a day, but in reality I often take 2-3 full rest days a week at the moment.

Are you hungry? you might be fairly severely under-eating for the amount of work you're doing.

I think you may need to eat back more of those exercise cals.

If you go into 'reports' how do your net calories look over the last 90 days? Have they been generally above 1200, or below?