blueollie

Too heavy…and big brains versus big immunity

I weighed before my workout and weighed 190. That is simply too heavy to achieve my running goals; I need to lose 10 pounds over the next 3 months or so. I did weigh 187 after my workout but that doesn’t count.

Workout: planned weight workout plus an easy 3 mile walk outside along the Riverfront; I wore baggy sweat pants and a heavy blue coat and didn’t go all that fast.

Weights: rotator cuff
pull ups: 4 sets of 10, 1 set of 5/5 (different grips)
bench: 10 x 135, 4 x 180, 10 x 160
incline: 7 x 135, 7 x 135
pull down/curl super set: curl: 10 x 25 dumbbell, 7 x 30 dumbbell, 10 x 50 pulley. pull down: 2 sets of 10 x 162.5, 6 x 150, 4 x 137 wide grip.
dumbbell row, dumbbell bench: row: 3 sets of 10 x 65, bench: 2 sets of 10 x 65
military: 2 sets of 15 x 45 seated, 10 x 70 (each arm, or 140) machine (grip that gave the most vertical motion)
I did abs, stretching, etc.

Sign of age: the women who smiled at me the most: late 40’s to mid 50’s. :-)

Science
This is a nice article on human evolution; it talks about the trade-offs between having big brains and good immunity. If it seems strange that these two things are related:

[...] The two biologists focus on how particular types of white blood cells, known as natural killer cells, work in the human immune system. In addition to fighting infections and tumors, natural killer cells help regulate the growth of the placenta during pregnancy. Humans are unique among primates in having two variants of the genes that control the receptors for natural killer cells.

“B haplotypes are favored during reproduction. A haplotypes are more specialized toward defending against infections,” Parham explained. “These are subtle effects. On average, if you’re an individual that has two A haplotypes and no B haplotype, you’re going to have a slightly more robust immune system in terms of dealing with disease.”
Having two B haplotypes, in contrast, would allow for a more robust placenta. That would provide the fetus in the womb with more of the nutrients needed to grow a bigger brain. “In the course of human evolution, you had the evolution of these B haplotypes, which really did enable the brain to get bigger. … There are correlations between the size of the brain of the baby and these genetic factors,” Parham said.[...]

Note: there is a discussion about homo sapiens interbreeding with Neanderthals; some scientists aren’t convinced and see the “Neanderthal genes” as evidence of a common ancestor instead of cross breeding.

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January 25, 2013 - Posted by | evolution, science, walking, weight training | ,

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