Strengthening exercises can make the muscles tight, so follow strength exercises with stretching exercises. Stretching the muscles that support the knee with knee exercises is also important in preventing injury. Flexible muscles are not as easily injured as tight muscles. Tightness of muscles connected to the knee can also pull the knee out of alignment. When doing stretching exercises, be careful to go slowly and not to overstretch. You do not want to tear a muscle. Increase the duration of your knee exercises gradually to avoid overuse injuries and knee pain. Be patient.
1 Professional sod installation typically costs $500 to $1,000 for a 2,000 sq. ft. or smaller lawn. 2  Per square foot installation costs average $.50 to $1.00. 3  Installing sod on smaller lawns tends to cost more per square foot.
1 Professionally installed sod typically costs 14 cents - 60 cents a square foot, or $280-$1,000 for front and back lawns of 2,000 square feet. 2  A professionally installed underground sprinkler system typically costs $1,500-$2,500 for 2,500 square feet (a 50'x50' yard), depending on location and climate. For example, mowing an average-sized residential lawn typically costs $20-$40, while a weekly garden service can cost $65-$90 for mowing, leaf blowing, hedging and shrub trimming as needed.