Lol there is no way to stay at same weight, lose inches from waist and claim it all to glycogen retention.That is so stupid any TRUE bodybuilder will tell you.Serge was probably in constant state of glycogen retention.By that theory if he stopped training for a 7 days for example he will deflate to the side prior to his start of training.Yes? Get back to the real world.The truth is there are studies showing very increased HGH with short rest periods between sets.No matter what the weights used!
Start pumping
maybe you should read what has been written again?

everyone is in "constant glycogen retention", because every human being stores glycogen, but yes when you start working out a muscle more than once a week you will feel your muscles pumped for longer periods of time. and no he wouldnt deflate back to totally untrained state if not working out for a week, thats totally ridiculous. no one has said that, so you should get back to the real world and not twist what has been said. the truth is that you wont build muscle and loose fat unless your on drugs (and even then is it hard) or sometimes you can see the phenomenon in total newbies who can do it for a very brief period.
once again im arguing well established facts. the gaining muscle while loosing fat myth has been killed for years, so has serges ab cardio marathon advice.
as for serges training routine: it can work, as any other routine as long as you work progressively, which i said many times. but its not magic...nor is any other routine. consistancy will in most cases be more important than the specifics as long as you work out hard enough and dont use a totally fucked up routine.