[filiwickers]

The initial feeling of being tired, groggy, achy, etc. is called the "low carb flu."[1] Usually it takes a week or three for the symptoms to pass before you get over it. The more you relied on carbs as energy before, the longer it will take. The first time I switched to a paleo diet it took about 2 weeks before I felt normal. After that passed energy levels will skyrocket. I no longer rely on coffee and have high energy throughout the day.

You need to incorporate more good fats into your diet if you are still feeling low energy this far into it. There are two sources of energy for our body, carbs and fat. The low carb flu happens as your body is adjusting from using carbs as energy to using fat. It's likely you have lost so much weight because you haven't eaten any fat so your body is eating itself (literally).

Examples of good fats to eat are: coconut (meat, oil, butter), avocados, olives (oil, whole), and animal fats. You should definitely up your intake of these. That should help with your low energy.

Reading about paleo, primal, eating real food, or whatever you want to call it would be helpful. It is definitely a sustainable way to eat. It is essential to eat fat though. Lots of people have done and researched variations of these. Regardless of whether they are "fads" it is useful educate yourself a bit before jumping into something.

[1] (http://www.marksdailyapple.com/low-carb-flu/#axzz26B70TsmP)

[hunvreus]

Me and 3 other friends went through the same phase when switching over to the paleo diet; pretty regular thing, you just need to churn through and eat plenty of good fats. Nuts are a helpful snack too.

I would also highly recommend that you work out on a fairly regular basis; eating properly is one side of the equation. I've personally recommended Nerd Fitness (http://nerdfitness.com) to quite a few persons. It's very easy to start with and you can build it up to a fairly serious work out if you're motivated.