Smartphone Apps Using Photoplethysmography for Heart Rate Monitoring: Meta-Analysis - PubMed https://pubmed.ncbi.nlm.nih.gov/31758768/?i=6&from=/29215972/related Check out "Welltory: EKG Heart Rate Monitor & HRV Stress Test" https://play.google.com/store/apps/details?id=com.welltory.client.android Check out "Google Fit: Health and Activity Tracking" https://play.google.com/store/apps/details?id=com.google.android.apps.fitness Google fit only tracks heart rate/pulse but I'm somewhat asthmatic at this altitude just like in Mexico City. In 2019 it felt like i had water in my lungs once at night and other nights it feels like i was being smothered with a pillow... Without anyone there. That's the sensation inside my lungs. Not my face. And Utah is 4000+ feet compared to the 100 feet in Oroville, California i grew up in. And with my tbi? That's hell. https://drive.google.com/file/d/1LSNGj3nMDR-PXmYmgP-DEbhLOue0dPLN/view?usp=drivesdk The Department of Defense did a study on altitude and TBI. if it affects special forces at this altitude, what do y'all expect from me? 🤦🏽♂️ It's major effort every day to hold it together. There's why i buy magnesium L-threonate and NAD+and Resveratrol and use #welltory and #samsunghealth in the past and it showed I've got down to 88% or 89% to 91% blood oxygen level pretty frequently. In Utah and México City. https://drive.google.com/file/d/1-MOd4OmnuXQlHpR8_F80DXVEEvoRxuau/view?usp=drivesdk Samsung health is HIPAA compliant and accurate, per my former Samsung Galaxy S10 and it thinks I've a good chance I'll get MS. Yup. Multiple Schlerosis. And i googled it. Tbi, and especially frequent ones, increase your chances by 20 to 30% with each blow to the head as i recall. MS and Head Trauma https://www.webmd.com/multiple-sclerosis/features/ms-head-trauma Dunno where the exact article i saw the percentage and some say different. Some 15% and others less. Increased risk of multiple sclerosis after traumatic brain injury: a nationwide population-based study - PubMed https://pubmed.ncbi.nlm.nih.gov/22044110/ So yeah, I'm Kinda fucked. FUBAR. #tbiflooding #tbiawareness #tbisurvivor #tbi #tbirecovery #ptsdsurvivor #ptsd #ptsdrecovery (at North Ogden, Utah) https://www.instagram.com/p/CMSyGmAhSxs/?igshid=1x70bw4p9qau4