We should always keep in mind a all kinds of physical exercise are not suitable for all. b different people have different capacities. c, harder exercise d wrestling and gymnastics are suitable for young people e they have energy to perform them. Weaker and old people should take the milder exercise f walking, jogging and free hand exercise. Over exercise never does good, g it breaks down the health. h, we should always take those exercises i would suit us. Physical exercise is important for the preservation of good health. It j builds our character.