What exercises are useful to improve pec muscles (chest) and abs, without using weights??
Push ups will develop your pecs and strengthen your abs, while using your own body weight and your arms. Find a flat surface that is firm and will not make your toes slip. Remember to always warm up before any exercise. Warming up reduces the risk of injury and gets muscles ready to do a push up. You can actually lift/push/pull/etc more if you go through a proper warm up routine, as compared to diving straight into the exercises. Make sure to stretch your arms and wrists – key joints in push ups. Assume a prone position on the floor or other rigid surface (preferable carpeted-more on that later) that’s able to support your body weight. Keep your feet together!!! Make two fists and place them under yourself on the floor, approximately shoulder width apart. If you are on a relatively cushioned surface, such as a carpeted floor, simply support yourself on your fists between the first and second knuckles. If you are on a less forgiving surface, consider investing in some pushup grips (they
