What type of activities should I engage in?

• While resting
  If you have acute CHF, sit up in bed which allows your lungs to function better. Dangling your legs over the edge of the bed will help drain fluid from your chest. If you are on bed rest, alternately flex and extend your toes several times an hour and perform range-of-motion leg exercises as scheduled. These exercises can help prevent blood clots caused by congestion of fluid in the veins of your legs.
• Exercising
  Regular exercise such as walking or cycling should be done if you have stable heart failure. Even short periods of bed rest result in reduced exercise tolerance, muscular atrophy, and weakness, thus modify your exercise routine and pace yourself. To help avoid excessive fatigue, alternate light and heavy tasks and rest frequently. Maintain your activity level provided it doesn't cause shortness of breath, rapid heart, or severe fatigue. If these symptoms appear or worsen, notify your doctor. Gradually increase your activity. Recent studies show that patients with heart failure can exercise safely, and regular exercise may improve functional status and decrease symptoms. Stay as active as possible.