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jackill
2011-08-20 08:57:20
"little steps" from jackill Contract pics
Picture: little steps (Contract pics)
Stop walking on your hands Dessie
found the explanation below on yahoo answers

In your body, there are two main "compartments" of fluid. The fluid that is in your tissues such as skin, muscles, organs..etc and the fluid that is in the blood. Fluid is continuously moving between the two compartments. There is a balance in this fluid movement to make sure that too much does not move in one direction. If too much moves towards the tissues, then you have swelling of the tissues. If too much moves into the blood, then you have almost no skin tightness (turgor).

To simplify things, the things that control the net movement of fluid between the compartments are:

1. Proteins and salts in the blood (pulls the water back from the tissues due to the osmotic gradient)
2. Proteins and salts in the tissues (pulls water into the tissues from the blood)
3. Blood pressure (pushes water into the tissues)

If these are altered, then you get a shift of fluid from one compartment to the other.
e.g.
if the blood pressure increases then more fluid moves into the tissues than moving out.
if you have less proteins and salts in the blood, then more fluid moves into the tissues than moving out.
if you have too much protein and salt in the tissues, then more fluid will again move into the tissues than moving out.

When you exercise, you will have a higher blood pressure because the heart is pumping much harder to get more blood around the body. This higher blood pressure may increase the amount of fluid that is moving into the tissues. Furthermore, when you sweat, you lose salts. Fewer salts in the body may also lead to more fluid moving out of the blood and into the tissues. Furthermore, the blood vessels tend to dilate in order to lose heat, this causes a higher surface area inside the blood vessel which may increase the diffusion out of the blood. Why this occurs in some people and not others may be related to disease (high BP and low proteins and salts in blood), or it may be related to the poor circulation (Blood moves out of the limbs and back to the heart slower than blood going to the arms causing a "traffic jam" and increasing the "local blood pressure"), and in some people, it is normal and may be related to just the way their body is built.
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RECENT CONTRIBUTIONS 1 2 3 .. 27 Next page >>
Summit Summary
Meenteog: Squat and steep-sided summit on Glenbeigh Horseshoe
Collaborative entry Last edit by: Peter Walker 4 hours ago.
Lumpen in its higher reaches but very much steep-sided lower down (especially to the north), Meenteog is the first of the higher, more dramatic summits on the Glenbeigh Horseshoe if walked clockwi...

  
Summit Summary
Scarr: Three ridges, many routes and good views.
Collaborative entry Last edit by: simon3 16 hours ago.
Scarr has three useable ridges off it, to the north, south and east. The easiest perhaps is the Glenmacnass Waterfall carpark O11380 03009 (notorious for break-ins). From here head for the north ...

  
Track
Near Dublin/Wicklow (Ireland)
ewen 17 hours ago.
Note this will take considerably less time in my opinion. I take too many photos so it adds about an hour to the trip.... walk, Len: 12.7km, Climb: 469m, Area: Dublin/Wicklow (Ireland) Corrigasleggau

Summit Comment
Scarr: A walk in the clouds.
TommyV 2 days ago.
This route starts on an old forest road at Oldbridge, there is room for parking 5 or 6 cars near the top at O15162 01916. From here follow the road West until you reach a gate at O14832 01892. Go ...

  
Track
Omey Island
Onzy a day ago.
A circuit of Omey ... cut short by my fear that my car wouldn't make it back across the sound... walk, Len: 5.6km, Climb: 60m, Area: Galway Islands (Ireland)

  
Summit Comment
Camaderry South East Top: Glenealo Valley and Miners Village
sev 3 days ago.
Glenealo Valley and Miners Village - view from south slope of Camaderry South East Top (Aug. 2010)

Summit Comment
Camaderry South East Top: Glendalough Upper Lake
sev 3 days ago.
Glendalough Upper Lake and the valley - view from south slope of Camaderry South East Top (Aug. 2010)

  
Track
Short Loop north of Omey
Onzy a day ago.
walk, Len: 2.1km, Climb: 33m, Area: Galway Coast (Ireland)

  
Summit Comment
Seefin: "Megalithic Fallout Shelter"
sev 4 days ago.
Wicklow Mountains - Megalithic tomb on Seefin Mt.http://youtu.be/u--BKEqB-JM

Summit Summary
Skregmore: Incidental summit in the Reeks
Collaborative entry Last edit by: Peter Walker 4 days ago.
Much climbed but little remembered, Skregmore is a victim of its location. One of the highest summits in Ireland but adjacent to still higher tops, impressively rocky but still far less dramatic t...

  
Track
Coastal Walk north of Cleggan
Onzy a day ago.
A spectacular walk circling the peninsula immediately north of Cleggan ... a detour to Olivers for lunch and a fast coun walk, Len: 22.5km, Climb: 386m, Area: Galway Coastal Hill (Ireland)

  
Summit Summary
Cnoc an Bhráca: The last hurrah of the high Reeks
Collaborative entry Last edit by: Peter Walker 5 days ago.
Cnoc an Bhráca, together with its near neighbour Cnoc na DTarbh, are the last (relatively) high summits along the great ridge of the Eastern Reeks; beyond here the ground gradually declines to the...


RECENT CONTRIBUTIONS 1 2 3 .. 27 Next page >>