Most of the myths regarding market moves are not worth the paper they're printed on. That said, one old wives' tale worth noting, and even following, is the January effect.

For whatever reason, small-cap stocks do indeed outperform their larger brethren during the month of January.

I recently provided a list of 5 Stocks for the January Effect. On the list was a former high-flyer that lost enough market value to now qualify as a small-cap stock -- NutriSystem (NASDAQ: NTRI).

NutriSystem captured the investor imagination with its unique solution to weight loss and weight management. The company's home delivery of prepackaged meals promised ease of use with results.

Given the huge audience for such a solution, NTRI presented investors with a great growth opportunity. Even though it took a few years to catch on, investors eventually got the idea.

NutriSystem became a darling of the momentum crowd in 2005. In the span of a year and a half, the stock moved from the single digits to above $80 per share. Coinciding with a big marketing program, revenue and investors seemed to grow in tandem.

That's all well and good, but at some point valuation does matter. That time usually comes when growth or results fail to meet elevated expectations. For NTRI, that started to happen in mid-2007.

In no time flat the stock lost more than half its value as the momentum crowd fled. The stock has been trading on a flat line around $15 per share for most of 2008.

Remember the 90s? Ahh, the 90s, when I was in high school and college and we all believed that (a) bagels and cereal were diet foods and (b) drinking a Diet Coke with your pizza was a good way of cancelling out the calories.

The Coca-Cola Company (NYSE:KO) has announced that it will be releasing a new calorie-burning soft drink called "Enviga" in November, just in time to balance out your Thanksgiving dinner I suppose. That's right, I said "calorie-burning." It could be that my pizza/diet soda strategy from 1992 could finally actually work!

Enviga uses green tea extract (EGCG, which has nothing to do with an EKG, much though my mind immediately leaps there), caffeine and calcium, and the company says it is actually proven to burn calories. Investors seem cautiously optimistic and have sent the stock up a bit, about 20 cents, since the announcement.

I don't know. First of all: the packaging looks to me like those alcoholic drinks -- totally the wrong association for Coke's target market. Second, I connect calorie-burning with the fen-phen troubles of the late 90s (yep, those darned 90s again). Third, as Sarah Gim from Slashfood points out, Enviga is only "proven" to burn calories in "healthy people with a lean to normal body type" -- those that don't really need to burn any more calories. Sarah, Sarah! Don't you know that customers don't read the small print??

It remains to be seen whether Enviga will crash and burn due to confusing packaging, or it will soon be on the desks of millions of lean-to-normal female high school and college students, who are certain that they're in need of losing just five more pounds. If I know anything about their collective psychology, I'd be betting on option #2.