Cycling through sacred valley in Peru

After visiting Machu Picchu we returned to Cusco and we stayed there few days. 
Then we started cycling through Sacred vally, an amazing road in los Andes. We went all th eway to Quillabamba and we were planning to continue northward but from the eastern part of Peru. 
When we descended to 1000 m , it was damn hot and I couldnt tolerate it specially after nearly 3 months living in an altitude higher than 3000 m.