What exercise you practice daily to stay fit?

nothing. The only things I do daily are eat, sleep, go to the bathroom and brush my teeth.

I guess you could say I walk every day since I have to get around during the day.

Find a program that works for you, something realistic that you will actually do. This usually means a program designed by a professional that many people use (note: not all personal trainers are "professionals").

Couch to 5k (running for non-runners) 3 days a week
Strong Curves (resistance and cardio for women, emphasis on butt, for beginner or intermediate) 3 or 4 days a week
Starting Strength / Strong Lifts / ICF (strength program for men&women, emphasis on compound lifts) 3 days a week
PHUL (intermediate program, more aesthetic than strength) 4 days a week
PPLPPLx (intermediate and above, can be programmed for aesthetic or strength focus) 6 days a week

If you are new to working out, I suggest looking at the top 3 choices

lift weights five days a week.

I do treadmill approx. 3 times a week.. I did an hour last night at 5.2km's p/h..
Need to start with some toning exercises asap - have lost 7 kg's in 2 weeks!

I try to stretch daily, don't always manage it though. I like a sun salutations based sequence. I also do a bare minimum 30 mins of walking (I have a dog, so no punking out). But realistically, I'm a student with a pretty heavy course load, and I sit more than I should doing homework and stuffs.

I don't do any single type of workout every day. It's either some kind of HIIT, Body Combat, Body Step, running, hiking, Les Mils CXWorks, or maybe yoga/pilates. It's a big mix.

I don't exercise daily. I exercise 4-5 days a week.
Mon/Wed: pole
Tues/Thurs: yoga
Fri or Sat: could be rest days or a pole day depending on my work schedule and the way my body feels
Sun: always a rest day.

I walk daily, 45-60 minutes at brisk pace Mon-Sat, 20-30 minutes on Sunday. Calisthenics thrice weekly, 45 minute sessions.

I do the brisk walking for cardiovascular health (family history of high cholesterol and high BP ends with me). I do the calisthenics for strength, for the challenge, and for maintaining muscle mass and bone density.

swim hard MWF, run, weights, and recovery swims mixed in the other days.

I mix it up between running (4 x weekly), riding ( 3 to 5 x weekly), rowing (avg 3 x weekly) and strength training (3 x weekly) and I further mix the cardio up between steady state and intervals.

I'm going to assume, based on your question, that you're new to this. It's going to take some trial and error to find things that you enjoy doing (life's too short to be doing things that you hate doing) and what you're capable of doing now will very different to what you may be able to do a year from now, set realistic, progressive goals for yourself and have fun!

I generally workout 6 out of 7 days a week. I alternate days between doing a C25K program and YAYOG (You Are Your Own Gym). I take Wednesdays off about half the time just so I can sleep in and rest once a week (like today, I was tired...). I'll be back after it tomorrow!

60 min on treadmill/5 X Week

Exercise videos 6 days a week, 40-60 minutes per day. I just started a 30 day squat and plank challenge too.

I try to do some walking pretty much every day (I average about 10,000 steps a day). Some days I do some strength training as well as more vigorous cardio (like jogging). Right now my schedule allows me to split my walking up throughout the day.

30 min of cardio, either elliptical or running and stair climbing. Weights every other. Walk the dog sfor a mile but that's leisurely.