1 The cost of a ventless gas fireplace is $500 to $2,500, and while there are additional installation costs, you may pay extra for finish work (such as a mantle, marble surround, etc.).2  Some top-of-the-line gas fireplaces may cost as much as $5,000 to $10,000 or more. 3  A gas log kit might cost $750 to $1,000 installed. Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
Sperm can be affected by lifestyle factors such as smoking, drinking alcohol and taking drugs. There are other lifestyle factors that you may not be aware of, and they're also explained here. The good news is, once you become aware of them, they are fairly easy to avoid. It may be.
A study published in the October 18, 2003 edition of Human Reproduction reported that high fever in men negatively impacts the production of sperm. Fever can lead to morphologic changes in sperm which decrease production and longevity. These effects can last for several weeks after the fever and may be dependent on how long the fever existed. 2. Moisture . Sperm do not live long without moisture. Sperm account for between two and five percent of the composition of semen. The semen provides a moist, nutrient rich environment for sperm according to News Medical. Once outside the body, the sperm will only live until the semen dries.