Nothing can be done now to increase fitness.
"We're working on genes that increase fitness and defenses against diseases.
Joanna Hall's nationwide walking club, Walkactive, promotes walking to increase fitness, improve health, manage weight and tone your body.
Soon, we have heard, V.R. will improve the military, increase real-estate sales, change education, transform journalism, increase fitness, and reinvent fine dining.
"If you want to fight childhood obesity or increase fitness, no sport can transform you as much as weight lifting — look at Tommy Kono.
Just as natural selection favours those variations that happen to increase fitness, so the law of effect selects those responses that happen to be followed by certain consequences.
At the same time, a fetus and child fed plentifully is able to increase fitness by extending the length of the reproductive period in both directions.
All of these evolutionary adaptations increase fitness in terrestrial environments, and as such, their parallel (convergent) evolution in multiple lineages under the same selective pressure is expected.
Antagonistic pleiotropy, the evolutionary theory of senescence, posits that age related somatic decline is the inevitable late-life by-product of adaptations that increase fitness in early life.
Intralocus sexual conflict (IASC) occurs when sex-specific selection favors genes that increase fitness in one sex and decrease fitness in the other sex.
These adaptations increase fitness by aiding activities such as finding food, avoiding predators or attracting mates.
