WHY DO THEM
#1.
If you are one of those bro's that does longer cycles, of say 10-12 weeks or more, and then wisely takes an equal amount of time off, and you are tired of loosing so much of your gains post cycle due to the length of the time off...the yoyo affect....then why not try doing shorter cycles with their corresponding shorter off times...... obviously you don't gain as much with a short cycle but then again you don't loose as much post cycle either due to the shorter off time.
Now... over say a year of doing 4 on 4-6 off you are gong to get very similar results as that seen from doing longer cycles of say 12 "on" 12-14 off but with less yo-yo affect and less sides. In fact most of my clients that do 4-6 week cycles tell me that they are actually getting better gains over a years use.
#2.
Do them to have less of a negative impact on ones lipid profile and to have less total time per year with a poor lipid profile.
Some of you may not know that androgens, taken at even newbie bodybuilding doses, alter everyones lipid profile. Everyone sees their hdl(good cholesterol) take a huge "nosedive" and most also see their ldl(bad cholesterol) go up to some degree but not to the same degree that hdl decreases. Generally hdl decreases 40-70% in as little as 2 weeks and ldl increases an average of 36% in 4 weeks. In my experience this reduction in hdl puts all bro's hdl WELL below the pathological minimum of 35. My ldl does not elevate above the pathological level of 160 but others see ldl's well above 160.
Lipid levels typically normalize within 3-10 weeks after discontinuation.
( details taken from article in Medscape)
Here are my "numbers" from the last long cycle of test 750mg/week and tren 75mg/day. A powerful stack but not a huge dose of gear. It's been as bad with less powerful gear and lower doses. Blood work done after week 7.
Total cholesterol 181...not bad.
ldl 160...not very good
hdl 11.6! CRAPPY big time
Cholesterol to hdl ratio 15.7 to 1...ABSOLUTELY TERRIBLE! This is when my doc and I had a COW at the same time.
Triglycerides 50...good.
Here is my "baseline" without gear
Chol 152...great
ldl 106...great
hdl 45-48...good
tri 50..good
chol to hdl ratio....3.16 to 1.....good
.As far as I and my endochrinologist are concerned this lipid altering side of gear use is the single worst side of steroid use.
In as little as a week hdl decreases. Personally my brother-in-law and I really see a huge decrease after about 3 weeks "on' cycle. The last time I did a long cycle my total cholesterol to hdl ratio plummeted to 15 to 1!...My doc had a cow and so did I!!
According to current medical thought ones total cholesterol to hdl ratio is the single greatest LIPID indicator for assessing ones chances of developing heart disease. Men with low total cholesterols but with crappy hdl have gone on to develope heart disease WITHOUT ANY OTHER RISK FACTORS such as smoking, or diabetes.
Ideally you want an hdl of at least 40 and a ratio of 3.5 to 1 or better.
My mentor, the late great MIKE MENTZER died of heart disease at age 50 and I know for a fact that ARNOLD had more than valve surgery(I am an operating room nurse as well as a trainer)
#3.
Do them to decrease liver stress.
Generally long cycles with non 17aa roids are not that hard on the liver but sometimes one can get into trouble. The short cycle allows for less total stress on the liver and the frequent "off" times allows the liver to regenerate very well.
Generally a healthy liver can take pretty big "hits" for short periods of time without any problem ...it is long term stress that cause liver damage(as seen with elevated GGT enzyme levels)
#4.
Do them if you want to "tone down" your use of steroids.
#5.
Do them if you do NOT want to use HCG during a cycle to prevent testicular atrophy. HPTA shut down will be complete in as little as a week "on" but testicualr atrophy is minimal due to the short length of this shut down. This then allows for better HPTA recovery post cycle.
It is small testes that makes HPTA recovery slow because GnRH from the hypothalamus and LH from the pituitary normally rebound pretty rapidly.
* There will be some testicular shrinkage in any cycle so if you do 4 "on" 4 "off" for several cycles in a row then it would be a good idea to use hcg at 500iu's every 3rd day while "on" to prevent testicular atrophy...the 4 weeks "off" may not be enough time to allow for complete testicular recovery and over the span of several cycles this may impact your HPTA recovery.
You certainly can use hcg while on any short cycle to prevent any testicular shrinkage if you like but it really isn't necessary.
#6.
Do them if you do not want to see much in the way of water retention and do not want to use an estrogen inhibitor or an ace inhibitor(diuretic)
#7.
Do them if you get high blood pressure and do not wish to use the above mentioned ancillaries.
#8. Do them if you are sick of androgenic sides such as ance, prostate hypertrophy and hair loss(if prone to hair loss) etc etc.
Androgen sides come on for two reason...dose used and especially length of time "on". I do not get acne until after 4 weeks on and then I get hammered.....and I hate it.
#9.
Do them if you are tired of walking around with high estrogen levels for months on end and do not wish to or cannot afford to use an estrogen inhibitor. High estrogen levels are NOT good for the prostate at all!
You certainly can use estrogen inhibitors if you like if you want to keep estrogen levels down and experience very little water retention.
WHY NOT TO DO THEM
Obviously if you compete at a high level then short cycles are probably not the best for you, BUT I think they are the best way to use steroids for the vast majority of bro's.
Top competitors need to be "on" either all the time or most of the time....thats unfortunate but usually necessary in order to get freaky huge which is now needed to win big.
WHAT TO EXPECT
If one is not yet at ones natural maximum level of muscular developement then very good gains can be seen of up to 15 pounds and 10 pounds kept after a 4 weeker...as long as you train correctly as a natural post cycle.
If one is off gear and has dropped to ones natural max then a short cycle can add up to 10 pounds. If you take no more than 6 weeks off after each four weeker you will not loose much...then in each successive cycle you can still gain but the gains will be smaller the further you get from your natural max.
Those that are off cycle and have not yet shrunk down to their natural max can still gain well with successive short cycles but don't expect to win at the national level.
One of the things I like about short cycles is the short time "off" between cycles.......muscular atrophy is minimal during the off time and you are allowing for frequent bodily normalization after minimal time "on". LESS SIDES IN GENERAL, LESS TIME WITH A SHITTY LIPID PROFILE and LESS MUSCLE LOSS POST CYCLE.
NOTE: You cannot get "freaky big" in this way...that takes very big doses and spending most of the year, for years on end, on steroids as well as GH and slin, and that my freinds is simply not a good idea unless you plan to make your living as a bodybuilder.
Getting pretty darn big in small steps is a safer way to use gear IMHO...and it messes less with one head too. Some guys really get depressed during "off" times of 12 or more weeks waiting to start their next cycle.