after 7 sessions straight with one day max absent I suddenly got the freakin' bugs am sick as in aching muscles, high fever on one day and stuffy running nose? never had this in 10yrs. that I know of 
jp747 I have the exact same thing. You think you are over it one day but the next the aches will be back and you wake up in the morning just not feeling 100% right.
I went out for a week straight in Sydney couple weeks ago and ever since I haven't really been too well. Muscle aches, fever, headaches, common cold symptoms. Same as you described.
Was thinking of going to the doctors but as I said some days you'll think you'll be over it then it'll hit you the next day again. I may go now -shrug-
or... the flu? Like the real flu, not the one everyone says they have when they actually have a cold.
If it hit you very quickly. Like a couple of hours between feeling alright to feeling like absolute s**t. Then I reckon its the flu.
Below courtesy of Wikipedia:
"Symptoms of influenza can start quite suddenly one to two days after infection. Usually the first symptoms are chills or a chilly sensation, but fever is also common early in the infection, with body temperatures ranging from 38-39 °C (approximately 100-103 °F).[50] Many people are so ill that they are confined to bed for several days, with aches and pains throughout their bodies, which are worse in their backs and legs.[1] Symptoms of influenza may include:
Fever and extreme coldness (chills shivering, shaking (rigor))
Cough
Nasal congestion
Body aches, especially joints and throat
Fatigue
Headache
Irritated, watering eyes
Reddened eyes, skin (especially face), mouth, throat and nose
In children, gastrointestinal symptoms such as diarrhea and abdominal pain,[51][52] (may be severe in children with influenza B)[53]
It can be difficult to distinguish between the common cold and influenza in the early stages of these infections,[2] but a flu can be identified by a high fever with a sudden onset and extreme fatigue. Diarrhea is not normally a symptom of influenza in adults,[48] although it has been seen in some human cases of the H5N1 "bird flu"[54] and can be a symptom in children.[51] The symptoms most reliably seen in influenza are shown in the table to the right.[48]"
If you overdo it or run yourself down you can run your immune system down & activate any nasties hanging around ross river , chronic fatigue etc..don't sail a week in a row..don't know how you can do it ! I used to get bronchitis when I pushed myself too much.
Every one gets the flu some time during the year, grab a cup of concrete and harden the F#%$ up, you will come good.
