You could actually have a good cardio workout plan without using any equipment. There are exercise tips which you can read on fitwatch.com like walking, jumping jacks, push ups and so much more.
Yes you can find workout plans for men online. A good website would be: http://www.mensfitness.com/training/workout-routines And you could research some online.
Some good indoor cardio exercises you can do you can find on a lot of DVD workout programs. The Biggest Loser cardio workout program is a great choice and so is Tae Bo.
One can find some free exercise routines and guides online from the following sites; YouTube's Cardio insanity work out full episode, Workoutz, and Pinterest's Free full length workout videos and fitness blender.
Tae Bo workout DVDs can be found in stores like Best Buy, Target, Walmart, and Staples. Additionally, these DVDs can be found online at sites like Amazon, eBay, Quill, and Total Fitness DVDs.
You can find a different workout routine online at the following sites I found for you at www.trainwithmeonline.com/ , and at this site www.fullfitness.net/
Workout plans are available in books on the subject, which can be purchased in a bookstore, or checked out of a library. There are also many online sites that provide printable workout plans.
Yes, you can find a workout online that marines do to keep them fit. You can find a program like Insanity or P90X that will be intense enough for the marines.
You can find some inner thigh workouts online on fitness blogs and famous peoples workout videos. Do try rollerblading because it is a good workout for thighs.
You can find highly recommended boxing workout routines by inquiring directly. Boxing is a dying sport so you may be hard pressed to find something valuable.
You can find good workout DVDs online. Go to new places and search for movies. Check out the different links to find one that suits your needs and time.
You can find some great dance workout videos online at the following sites I have included fitbottomedgirls.com fitbottomedgirls.com/2011/01/the-10-best-dance-workout-dvds/ . This one is the ten best dance workout videos.
I don't know about golf workout online. There are lots of golf videos online that you can check out but I think it's better that you find a golf range to do this.