What to do indoor exercise can increase explosive leg?

Because there are still three and a half months on the entrance exam. So now intend to start practicing,
, but also has a heavy burden of cultural studies. Can not go to the playground every day practice, would like to ask what can be used in indoor sports can increase explosive leg. Normally be able to practice every day, mainly to improve performance

200 meters of the goal is 30 seconds,

heard squat jump effective. I do not know really, want everyone to know, say something. Will not be copied. Easy to approach and attention to issues like smart writing. .谢谢. Hope that we help

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squat jump is possible, if you squat and then stand up on it. For the first time not to do too much, will thigh injury, will be very sore the next day. Every time 30, and then walk 5 minutes rest, then continue to the next 30. Physical fitness in general the first time can be done 3-4 group. After the increase, as appropriate.

squat jump, high leg lift (high-mentioned knee), Dunqi, are very good,

be careful not to strain the muscles and make five minutes before the warming-up exercise: Activity wrist ankle, transfer about the waist, vibration about the arm, pressure stretching.

the hand on the table side, body straight, with toes alternately Dundee. Another way is to exercise standing, with alternating pairs of toe-shaped knives do not know your physical education teacher told you such a move not, this is my exercise of my sports coaches common method is very suitable for indoor training.