The purpose of the study is:

1) To evaluate the efficacy and feasibility of an SMS reminder intervention for promoting an health-related exercise programme (myPAtHS) among older Malaysian adults, in a randomized controlled trial (RCT).

Hypothesis: Frequency and duration of the exercise programme execution will be higher for the SMS reminder condition compared to the programme only condition. The effect may be reduced from post- to follow-up measurement (24 weeks after baseline and 12 weeks after post-measurement) but all outcomes will remain significantly higher at 24 weeks.

Inclusion Criteria:

• Mobile phone user
• Acceptable health that does not prevent exercise
• Acceptable command of the English language
• No engagement in a regular- structured exercise routine like gym training or other structured programmes
• Interest in an exercise programme
• Willing to attend scheduled follow-up sessions at 12 weeks (pre-post evaluation) and 24 weeks (post-intervention evaluation) after the first session

Exclusion Criteria:

• participants who have any medical condition or health concern that would restrict regular exercise based on one screening question. If this question will be answered with "yes" participants are advised to seek medical care.