u/Amphibologist

This is a real long shot, but I'm trying to remember the title/author of a book I would have read in the late 80s. It was a mass market paperback that was probably published between 1975-1985.

The only thing I remember is that it was set present day (ish), and the protagonist had been trained or engineered to have total control of his body. He had a heightened intellect, but also do things like increase capillary action and oxygen absorption to his lungs at will, (this happened during a scene where he was being pursued - the only part I can really remember). So sort of a perfect, optimal human sort of thing. It was technothriller-ish, and he was on the run. It had a Keith Laumer vibe, but I've recently gone through the Laumer catalogue (I have most of those books) and it's not him. It's probably a lesser-known writer.

Any ideas, hive mind?

This is a real long shot, but I'm trying to remember the title/author of a book I would have read in the late 80s. It was a mass market paperback that was probably published between 1975-1985.

The only thing I remember is that it was set present day (ish), and the protagonist had been trained or engineered to have total control of his body. He had a heightened intellect, but also do things like increase capillary action and oxygen absorption to his lungs at will, (this happened during a scene where he was pursued). So sort of a perfect, optimal human sort of thing. It was technothriller-ish, and he was on the run. It had a Keith Laumer vibe, but I've recently gone through the Laumer catalogue (I have most of those books) and it's not him. It's probably a lesser-known writer.

Any ideas, hive mind?