Artificial methods in common use include preventing the sperm from reaching the ovum (using condoms, diaphragms, etc), inhibiting ovulation (using oral contraceptive pills), preventing implantation (using intrauterine devices), killing the sperm (using spermicides)
Dos to prevent sway back posture. Sit deep in your chair, with your back straight and your chin facing ahead.train quad muscles with the correct exercises, such as half squats. Strengthen your lower abdominal muscles with leg lifts and reverse crunches.
