Hi,
I have been on IF since the begining of March of this year, with variable results.
Firstly, I really like the idea of the diet, and the science behind it - plus, I found I enjoyed my morning espressos even more, on an empty stomach (I started my feeding at midday, after a morning workout)
I did find it difficult getting used to training on an empty stomach though, as I train at about 10am. There is provision to eat before training, starting your feeding earlier ie; feed from 8am-4pm (in my case) but that means fasting from 4pm, through the evening - which is difficult with family/social evening meals etc.. - then eating when I get up.
I also lost strength while training without carbs pre workout.
The main concern, for you, would be trying to eat 80% of your cals post work out, especially if you are trying to bulk up. (Believe me, I needed around 4000cals post w/o, and that is one big heavy post w/o meal!) I found it very uncomfortable, trying to force that amount of cals down in the hour after training.
For cutting, its a lot easier, as you are eating significantly less cals.
I also work shifts occaisonally, working through the night, which also messed up my routine for fasting. Finishing eating at 8pm, then working through til 6am, on an empty stomach, is really hard going. Then I would eat when I got up about 1pm.
Results wise, I did cut a bit, and enjoyed it, mostly, but, I have lost some muscle over the last year, which I am desperately trying to recover, so I have reverted to a standard bulking diet for now, which I will follow with a rapid fat loss diet, before my beach holiday in September.
If you want the specifics of the IF, that I followed, please feel free to PM me.
Hope this helps
Regards
Brix