Strength building is correct because it says flexibility exercises which means your working out , and strength-building is the only one that would go along with a workout. Hope this helps !
Referral programmes help in better publicity and higher sales of products and services.
The first step in setting up of referral program is laying a strong foundation. One needs to build a good and strong reputation in the market. This can be achieved through good quality of products, effective and satisfying services and efficient customer support team. This help in customer satisfaction which will make them loyal to you.
The second step is design of the referral programme. The design and content of the referral programme should be clear, precise and easily understandable. This will make the people to join the referral programme more easily.