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Just like any other year, this year many Americans made the resolution to lose weight. Therefore, the first three months of the year is the best time to own weight-loss companies, Jim Cramer told viewers of his "Mad Money" TV show Wednesday.

Cramer named

Life Time Fitness

(LTM) - Get LATAM Airlines Group SA Sponsored ADR Report

as his "No. 1, best-of-breed, health club pick," saying he is a "huge fan" of this weight-loss stock.

The health fitness business is a big industry that's getting bigger, he said. And as the weight-loss play is about people trying and failing time and time again to lose weight, it is everlasting, Cramer added.

Of the two high-growth fitness clubs, Cramer prefers Life Time to

Town Sports

(CLUB) - Get Town Sports International Holdings, Inc. Report

.

Not only does Life Time have better operating margins and higher revenue per member than Town Sports, but also based on its growth, it is not an expensive stock, he said.

In addition, Life Time is in a better position with a better business model and has larger clubs with better amenities, Cramer said.

It is true that Prudential recently gave Life Time an underweight rating, meaning a sell, he said. But "this one deserves to be a buy."

Even though it will cost more for Life Time to expand into wealthier areas, that's where the company will be able to charge outrageous prices and make more money, Cramer said, arguing Prudential's reasoning for its downgrade.

"Go with Life Time," he said.

Food for Thought

NutriSystem

(NTRI) - Get Nutrisystem, Inc. Report

has gotten "crushed" in the last couple of days because it came out with "awful" guidance, Cramer told viewers.

The company, which makes preprepared foods and sells it directly to consumers, was "flying high, then got pounded," he said.

But even though NutriSystem looks cheap, Cramer believes that the stock is too dangerous to own now, just as it was to own it 20 points higher.

"It is done," he said, adding that the market won't get fooled again by the stock. Think of it as a "one-hit wonder," Cramer said. It will go through "a long period of decline."

Image placeholder title

NutriSystem's average customer stays only 10 weeks before leaving, he said. And given the fact that almost no one out there

hasn't

been exposed to it -- as its ads are everywhere -- Cramer doesn't believe that the stock has any reason to do well.

"Forget it," he said. Instead, look at

Weight Watchers

(WTW) - Get Weight Watchers International, Inc. Report

, Cramer advised. It has growth you can count on, and it has great customer retention.

Am I Diversified?

In his "Am I Diversified?" segment, Cramer's first caller named the following five top stocks:

Bank of America

(BAC) - Get Bank of America Corp Report

,

Medtronic

(MDT) - Get Medtronic Plc (MDT) Report

,

Nxstage Medical

(NXTM) - Get NxStage Medical, Inc. Report

,

Respironics

( RESP) and

Amgen

(AMGN) - Get Amgen Inc. Report

.

Cramer said the portfolio was not at all diversified. Other than Bank of America, the other four are related to health care, he said, advising the caller to get into other sectors.

Cramer's next caller owned the following five stocks:

Genentech

( DNA),

Google

(GOOG) - Get Alphabet Inc. Class C Report

,

Altria

(MO) - Get Altria Group Inc Report

,

NYSE Group

(NYX)

and

Goldman Sachs

(GS) - Get Goldman Sachs Group, Inc. (GS) Report

TheStreet Recommends

, the latter three of which Cramer owns for his charitable trust,

Action Alerts PLUS.

Cramer blessed the portfolio as diversified.

In his "Mad Mail" segment, when a mailer asked how to buy

Waste Services

( WSII) with a limit order, Cramer urged the viewer to refrain from acting on stocks the same night he recommends them.

Day one, do your homework; day two, let others get discouraged and throw the stock out; and then on day three, back up the truck, he said.

During his "Sudden Death" round, Cramer was bullish on

GameStop

(GME) - Get GameStop Corp. Class A Report

,

Alcoa

(AA) - Get Alcoa Corp. Report

and

Deere

(DE) - Get Deere & Company Report

.

Lightning Round

Cramer was bullish on

Zimmer Holdings

(ZMH)

,

Hewlett-Packard

(HPQ) - Get HP Inc. (HPQ) Report

,

VeriFone

(PAY)

,

Southern Copper

( PCU),

Phelps Dodge

( PD),

Syneron Medical

(ELOS)

,

BEA Systems

( BEAS),

NYSE Group

(NYX)

and

NTL

( NTLI).

Advanced Micro Devices

(AMD) - Get Advanced Micro Devices, Inc. Report

,

Cramer was bearish on

EMC

(EMC)

and

Intel

(INTC) - Get Intel Corporation (INTC) Report

.

For more of Cramer's insights during the Lightning Round, click here

.

Want more Cramer? Check out Jim's rules and commandments for investing from his popular book by

clicking here

.

At the time of publication, Cramer was long Hewlett-Packard, NYSE Group, Goldman Sachs and Altria.

Jim Cramer, host of the CNBC television program "Mad Money," is a Markets Commentator for TheStreet.com, Inc., and CNBC, and a director and co-founder of TheStreet.com. All opinions expressed by Mr. Cramer on "Mad Money" are his own and do not reflect the opinions of TheStreet.com or its affiliates, or CNBC, NBC UNIVERSAL or their parent company or affiliates. Mr. Cramer's opinions are based upon information he considers to be reliable, but neither TheStreet.com, nor CNBC, nor either of their affiliates and/or subsidiaries warrant its completeness or accuracy, and it should not be relied upon as such. Mr. Cramer's statements are based on his opinions at the time statements are made, and are subject to change without notice. No part of Mr. Cramer's compensation from CNBC or TheStreet.com is related to the specific opinions expressed by him on "Mad Money."

None of the information contained in "Mad Money" constitutes a recommendation by Mr. Cramer, TheStreet.com or CNBC that any particular security, portfolio of securities, transaction, or investment strategy is suitable for any specific person. You must make your own independent decisions regarding any security, portfolio of securities, transaction, or investment strategy mentioned on the program. Mr. Cramer's past results are not necessarily indicative of future performance. Neither Mr. Cramer, nor TheStreet.com, nor CNBC guarantees any specific outcome or profit, and you should be aware of the real risk of loss in following any strategy or investments discussed on the program. The strategy or investments discussed may fluctuate in price or value and you may get back less than you invested. Before acting on any information contained in the program, you should consider whether it is suitable for your particular circumstances and strongly consider seeking advice from your own financial or investment adviser.

Some of the stocks mentioned by Mr. Cramer on "Mad Money" are held in Mr. Cramer's Action Alerts PLUS Portfolio. When that is the case, appropriate disclosure is made on the program and in the "Mad Money" recap available on TheStreet.com. The Action Alerts PLUS Portfolio contains all of Mr. Cramer's personal investments in publicly-traded equity securities only, and does not include any mutual fund holdings or other institutionally managed assets, private equity investments, or his holdings in TheStreet.com, Inc. Since March 2005, the Action Alerts PLUS Portfolio has been held by a Trust, the realized profits from which have been pledged to charity. Mr. Cramer retains full investment discretion with respect to all securities contained in the Trust. Mr. Cramer is subject to certain trading restrictions, and must hold all securities in the Action Alerts PLUS Portfolio for at least one month, and is not permitted to buy or sell any security he has spoken about on television or on his radio program for five days following the broadcast.