Inclusion Criteria:  The target population is cognitively normal older adults with Subjective Cognitive Concerns (SCC). SCC will be operationalized as  a positive complaint in response to the question: 'Have you experienced a decline in your memory or other aspect of thinking in the last 1-3 years that seems worse than others of your age' normal cognition on the modified Telephone Interview of Cognitive Status (mTICS) independent function in daily life. Age 65 or older English speaking Lower level of engagement in healthy lifestyle behaviors and compensation use at study baseline (i.e., broadly defined as not a regular exerciser) Approval from primary care (due to physical exercise component of the intervention) Open to utilizing digital tools such as a digital calendar in daily life  Exclusion Criteria:  Known diagnosis of dementia or cognitive impairment; Other known neurological condition with potential to affect cognition (e.g., Parkinson's disease) Reported history of severe psychiatric disorder (e.g., self-reported history of bipolar disorder or schizophrenia or other psychotic disorder) Inability to complete the study protocols due to severe vision or hearing difficulties. Has previously participated in a previous version of Brain Boosters, or another study utilizing the Digital Memory Notebook (DMN) application or EMMA.