Your spine should be straight and in line with your butt, which isn't sagging. Your palms are generally a little wider than your shoulders, but you can go wider for a better chest workout and narrower for a better arm workout.
[header] How to build muscle at home [title] Do push-ups to work your arms and chest. [step] Push-ups are the bread and butter of home workouts. Make sure your form is good to get the most out of it.