Training the legs can be done in a variety of ways and some of the best exercises don't always involve weights. Working them with weights have their place and many people have been successful at it. Some of us just go in a different direction in how we keep them going as we move along through life.
As you know, I'm a big advocate for Step Ups and how they are one of the best exercises for the legs you can do. They're not superior to other exercises like squats or lunges but they're also not to be underestimated either. They have a way of creeping up on you and they can be a challenging with the way you can go about it. Some of the best athletes in the world have done them from wrestlers to baseball players and others. Bob Backlund made them a huge piece of his training to the point where he can go as long as he wanted, he was just that crazy. Other wrestlers like William Regal did them and even the real Suplex Machine Taz taught them to his students at his school many years ago (he has it on film).
When it comes to squats, they're awesome in their own right. Hindu Squats were the exercise that helped me get back into shape after my accident but you already know that chestnut by now. The only time I really do them now is when I do my deck of cards workout with the Step Ups and the numbers vary. They're not a huge part of my training where there are some exercises I find better for me but the squats do hold a place in my heart and when I do them, they're firing. When combined with Step Ups, it's a recipe for some killer leg conditioning, there's no way around that and if anyone says different hasn't fully understood the magnitude of them.
My deck of cards workouts for the legs is combining these two powerhouses to the point where on average these days I'll do 500 Step Ups & 250 Squats respectively and that's within roughly 30 minutes, maybe a little longer but I do the whole deck and it's an incredible feeling afterwards. It's conditioning that matters and utilizing both unilateral and bilateral movements together to form incredible stamina and strength. Training this way is fun, challenging and although you reach the same destination, you never take the same road twice when you do the cards.
Card Workouts have been around for decades, maybe longer and if anyone truly made that with the best of intentions was Karl Gotch and his system of Squats & Push-Ups. Hell, I've done enough of them to where I did 400 Squats & 250 Push-ups on several occasions, it's brutal. Long ass time since I've done it that way and who knows, one day I may do it again, never say never. The point here is, You want to get the best out of your training and make strides to get a little better but also keep yourself healthy. It's not easy by any stretch and it's not meant to be but you do what is possible and expand on it. You can do it everyday if you want or do it a few times a week, it's up to you but you progress to what your body is able to handle. If you need to back off of it, do so and when you're ready, get back at it. You got this.
When you do the workouts with the cards, start with as many cards as you can possibly do. If you can do the whole deck on the first try, that's awesome, you're ahead of the curve, but not everybody is able to do that. Even I had to build up to it and once I did, it felt glorious. A deck of cards can be deceiving and it will kick your ass. It's one thing to do one exercise for the legs in this manner, it's another when you add one more to it and it's all legs. Be humble and don't think it's just a workout to weez on by, it'll make you think twice and it'll put you down for the count if you don't pay attention.
Take a shot at it, you never know what you're capable of and it's a unique way of training the body that has incredible perks and benefits. Keep being amazingly awesome and kill it in your own training.